As any good gamer or engineer knows, _____

• video games are fun
• it takes the right move to win
• you need to read the manual
• marshmallows are fluffy

A condition or value that can be changed is called _____

• a variable
• a solution
• a prototype
• a problem

We can control some variables, like _____

• the height from which we drop  a ball
• the gravity that pulls the ball down
• the speed of the wind
• the time it takes for the ball to drop

We can't control some variables, like _____

• the height from which we drop  a ball
• the gravity that pulls the ball down
• the type of ball that is dropped
• the size of ball that is dropped

Whether a solution to a problem turns out to be successful or not depends on _____

• knocking down a pile of marshmallows
• choosing the correct angle
• how far we pull back on the slingshot
• choosing the right way to change a variable

The way something turns out, like whether a solution solves the problem or not, is called _____

• a problem
• a strength
• an outcome
• a variable

When launching Catbot, the angle of the launch is _____

• a problem we can solve
• a problem we can't solve
• a variable we can change
• a variable we can't change

When launching Catbot, we can change _____

• the size of the pile of marshmallows
• the speed of the wind
• the force of gravity
• how far we pull back on the slingshot

In repeated trials, engineers only change _____

• the angle of the launch
• how far to pull back on the slingshot
• one variable at a time
• an uncontrolled variable

In general, changing a variable can affect _____

• the outcome
• a problem
• a knockdown
• the distance traveled