Assignment: Write Expressions With Variables To Solve Problems 6.EE.B.6 Assignment

Created by Debby T on

71 activities: 70 games, 1 assessment

835 min

Activity 1: Assessment. Estimated duration: 5 min

Assessment with 5 questions from Write Expressions With Variables To Solve Problems.

5 questions assessment

Activity 2: Simulation Game. Estimated duration: 10 min

Equality Explorer: Basics - Lab

Change the values of three different objects and build balanced and unbalanced situations. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 1.7 stars.

Student Ratings (1249) 3.0 stars.

Activity 3: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 4: Simulation Game. Estimated duration: 10 min

Equality Explorer - Variables

Discover how to maintain equality or inequality by adding and removing integers and variables from a balance. Build an equation or inequality and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (17) 3.1 stars.

Student Ratings (1927) 3.1 stars.

Activity 5: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 6: Simulation Game. Estimated duration: 10 min

Equality Explorer: Two Variables

Build equations and inequalities in two variables. Observe the effects of changing the values of the variables. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 3.0 stars.

Student Ratings (927) 2.9 stars.

Activity 7: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 8: Simulation Game. Estimated duration: 10 min

Equality Explorer - Operations

Manipulate and solve equations by applying the inverse properties of addition and multiplication. Build an equation and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (1) 5.0 stars.

Student Ratings (964) 2.9 stars.

Activity 9: Simulation Game. Estimated duration: 10 min

Equality Explorer: Basics - Lab

Change the values of three different objects and build balanced and unbalanced situations. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 1.7 stars.

Student Ratings (1249) 3.0 stars.

Activity 10: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 11: Simulation Game. Estimated duration: 10 min

Equality Explorer - Variables

Discover how to maintain equality or inequality by adding and removing integers and variables from a balance. Build an equation or inequality and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (17) 3.1 stars.

Student Ratings (1927) 3.1 stars.

Activity 12: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 13: Simulation Game. Estimated duration: 10 min

Equality Explorer: Two Variables

Build equations and inequalities in two variables. Observe the effects of changing the values of the variables. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 3.0 stars.

Student Ratings (927) 2.9 stars.

Activity 14: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 15: Simulation Game. Estimated duration: 10 min

Equality Explorer - Operations

Manipulate and solve equations by applying the inverse properties of addition and multiplication. Build an equation and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (1) 5.0 stars.

Student Ratings (964) 2.9 stars.

Activity 16: Simulation Game. Estimated duration: 10 min

Equality Explorer: Basics - Lab

Change the values of three different objects and build balanced and unbalanced situations. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 1.7 stars.

Student Ratings (1249) 3.0 stars.

Activity 17: Simulation Game. Estimated duration: 10 min

Equality Explorer - Variables

Discover how to maintain equality or inequality by adding and removing integers and variables from a balance. Build an equation or inequality and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (17) 3.1 stars.

Student Ratings (1927) 3.1 stars.

Activity 18: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 19: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 20: Simulation Game. Estimated duration: 10 min

Equality Explorer: Two Variables

Build equations and inequalities in two variables. Observe the effects of changing the values of the variables. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 3.0 stars.

Student Ratings (927) 2.9 stars.

Activity 21: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 22: Simulation Game. Estimated duration: 10 min

Equality Explorer - Operations

Manipulate and solve equations by applying the inverse properties of addition and multiplication. Build an equation and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (1) 5.0 stars.

Student Ratings (964) 2.9 stars.

Activity 23: Simulation Game. Estimated duration: 10 min

Equality Explorer: Basics - Lab

Change the values of three different objects and build balanced and unbalanced situations. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 1.7 stars.

Student Ratings (1249) 3.0 stars.

Activity 24: Simulation Game. Estimated duration: 10 min

Equality Explorer - Variables

Discover how to maintain equality or inequality by adding and removing integers and variables from a balance. Build an equation or inequality and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (17) 3.1 stars.

Student Ratings (1927) 3.1 stars.

Activity 25: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 26: Simulation Game. Estimated duration: 10 min

Equality Explorer: Two Variables

Build equations and inequalities in two variables. Observe the effects of changing the values of the variables. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 3.0 stars.

Student Ratings (927) 2.9 stars.

Activity 27: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 28: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 29: Simulation Game. Estimated duration: 10 min

Equality Explorer - Operations

Manipulate and solve equations by applying the inverse properties of addition and multiplication. Build an equation and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (1) 5.0 stars.

Student Ratings (964) 2.9 stars.

Activity 30: Simulation Game. Estimated duration: 10 min

Equality Explorer: Basics - Lab

Change the values of three different objects and build balanced and unbalanced situations. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 1.7 stars.

Student Ratings (1249) 3.0 stars.

Activity 31: Simulation Game. Estimated duration: 10 min

Equality Explorer - Variables

Discover how to maintain equality or inequality by adding and removing integers and variables from a balance. Build an equation or inequality and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (17) 3.1 stars.

Student Ratings (1927) 3.1 stars.

Activity 32: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 33: Simulation Game. Estimated duration: 10 min

Equality Explorer: Two Variables

Build equations and inequalities in two variables. Observe the effects of changing the values of the variables. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 3.0 stars.

Student Ratings (927) 2.9 stars.

Activity 34: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 35: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 36: Simulation Game. Estimated duration: 10 min

Equality Explorer - Operations

Manipulate and solve equations by applying the inverse properties of addition and multiplication. Build an equation and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (1) 5.0 stars.

Student Ratings (964) 2.9 stars.

Activity 37: Simulation Game. Estimated duration: 10 min

Equality Explorer: Basics - Lab

Change the values of three different objects and build balanced and unbalanced situations. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 1.7 stars.

Student Ratings (1249) 3.0 stars.

Activity 38: Simulation Game. Estimated duration: 10 min

Equality Explorer - Variables

Discover how to maintain equality or inequality by adding and removing integers and variables from a balance. Build an equation or inequality and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (17) 3.1 stars.

Student Ratings (1927) 3.1 stars.

Activity 39: Simulation Game. Estimated duration: 10 min

Equality Explorer: Two Variables

Build equations and inequalities in two variables. Observe the effects of changing the values of the variables. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 3.0 stars.

Student Ratings (927) 2.9 stars.

Activity 40: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 41: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 42: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 43: Simulation Game. Estimated duration: 10 min

Equality Explorer - Operations

Manipulate and solve equations by applying the inverse properties of addition and multiplication. Build an equation and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (1) 5.0 stars.

Student Ratings (964) 2.9 stars.

Activity 44: Simulation Game. Estimated duration: 10 min

Equality Explorer: Basics - Lab

Change the values of three different objects and build balanced and unbalanced situations. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 1.7 stars.

Student Ratings (1249) 3.0 stars.

Activity 45: Simulation Game. Estimated duration: 10 min

Equality Explorer - Variables

Discover how to maintain equality or inequality by adding and removing integers and variables from a balance. Build an equation or inequality and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (17) 3.1 stars.

Student Ratings (1927) 3.1 stars.

Activity 46: Simulation Game. Estimated duration: 10 min

Equality Explorer: Two Variables

Build equations and inequalities in two variables. Observe the effects of changing the values of the variables. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 3.0 stars.

Student Ratings (927) 2.9 stars.

Activity 47: Simulation Game. Estimated duration: 10 min

Equality Explorer - Operations

Manipulate and solve equations by applying the inverse properties of addition and multiplication. Build an equation and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (1) 5.0 stars.

Student Ratings (964) 2.9 stars.

Activity 48: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 49: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 50: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 51: Simulation Game. Estimated duration: 10 min

Equality Explorer - Variables

Discover how to maintain equality or inequality by adding and removing integers and variables from a balance. Build an equation or inequality and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (17) 3.1 stars.

Student Ratings (1927) 3.1 stars.

Activity 52: Simulation Game. Estimated duration: 10 min

Equality Explorer: Two Variables

Build equations and inequalities in two variables. Observe the effects of changing the values of the variables. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 3.0 stars.

Student Ratings (927) 2.9 stars.

Activity 53: Simulation Game. Estimated duration: 10 min

Equality Explorer - Operations

Manipulate and solve equations by applying the inverse properties of addition and multiplication. Build an equation and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (1) 5.0 stars.

Student Ratings (964) 2.9 stars.

Activity 54: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 55: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 56: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 57: Simulation Game. Estimated duration: 10 min

Equality Explorer: Two Variables

Build equations and inequalities in two variables. Observe the effects of changing the values of the variables. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (3) 3.0 stars.

Student Ratings (927) 2.9 stars.

Activity 58: Simulation Game. Estimated duration: 10 min

Equality Explorer - Operations

Manipulate and solve equations by applying the inverse properties of addition and multiplication. Build an equation and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (1) 5.0 stars.

Student Ratings (964) 2.9 stars.

Activity 59: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 60: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 61: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 62: Simulation Game. Estimated duration: 10 min

Equality Explorer - Operations

Manipulate and solve equations by applying the inverse properties of addition and multiplication. Build an equation and observe the effects of changing the value of the variable. Note: Students will automatically move through this simulation after 10 minutes of playtime.

Ratings

Teacher Ratings (1) 5.0 stars.

Student Ratings (964) 2.9 stars.

Activity 63: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 64: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 65: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 66: Question Game. Estimated duration: 15 min

Newton Pool

The game consists of hand-crafted levels where the player controls a white ball. The goal of each level is to get the white ball to the end of the level in as few moves as possible, while racking up points by bumping golden balls into obstacles on the way! The game does not have any instructional math content, it simply has math review questions spread throughout.

Ratings

Teacher Ratings (738) 4.0 stars.

Student Ratings (254569) 4.0 stars.

Activity 67: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 68: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 69: Instructional Game. Estimated duration: 13 min

Burger Dash!

The new burger restaurant just opened and Jessie needs help on her first day of work. She will teach you how to calculate the cost of each burger, and she also has a surprise for you to celebrate the first day of business!

Ratings

Teacher Ratings (20) 3.5 stars.

Student Ratings (3473) 3.7 stars.

Activity 70: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.

Activity 71: Instructional Game. Estimated duration: 13 min

Algebratic 9000

Learn how to write and understand algebraic expressions and equations to represent real-world problems!

Ratings

Teacher Ratings (68) 4.5 stars.

Student Ratings (7082) 3.4 stars.