8.EE.C.8.b

Rocket Math 2

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Game Info for Teachers

COMBINED RATING

3.4 Stars

TEACHERS (18)

3.9

STUDENTS (1778)

2.8

LENGTH

5 Minutes

GRADES

CAPABILITIES

Spanish Language Support

Text-to-Speech Support

Description

Answer enough systems of equations to get your rocket into space before it runs out of fuel!

Vocabulary Words

linear equations

system of linear equations

substitution method

elimination method

value

equation

variable

Instructions

Play through this interactive game to learn about Solve Systems Of Equations. Suitable for Grade 6, Grade 7, Grade 8.

Main Concepts

Solutions for system of equations is an ordered pair and a solution to both equations.

A system of equations refers to a number of equations with an equal number of variables.

The solution for a system of equations is an intersection of the graph of their two equations.

Solutions to Systems of equations that are independent are lines that intersect at one particular point.

Solve systems of equations algebraically by substitution. Solve one of the equations and substitute the value for the variable into the second equation y=2x+4y and 3x+y=9, substitute y in the second equation with the first equation since y = y so 3x+(2x+4)=9, which will simplify to x = 1. This value of x can then be used to find y by substituting 1 with x e.g. in the first equation so, y=2⋅1+4 which simplifies so y = 6. Therefore, the solution is (1, 6)

The elimination method for solving systems of linear equations uses the addition property of equality (If you add the two equations, x – y = −6 and x + y = 8 together they will simplify to 2x + 0 = 2, so x = 1. From there you would substitute the value for x into the original equation and solve for y.

Discussion Questions

Before the Game

What are linear equations? What is a linear equation? What are you trying to solve for when you are given two linear equations? What are solutions to linear equations? What is the substitution method? What is the elimination method?

After the Game

As the problems increased in difficulty, what was a strategy you used? Which method did you choose the most - why? How can we use systems of equations in everyday life? Solve each of the following system by substitution: -7x + 4y = 24 and 4x = 4y = 0. Solve the following system using elimination: -16 + 20x - 8y = 0 and 36 = -18y - 22x.

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Game Details

Difficulty

Content Integration

Lexile Level

905