# Chopper Challenge Forest Fire - Subtraction

## Chopper Challenge - Forest Fire - Subtraction Math Game

Content Skill: Subtraction
Common Core State Standards: CCSS.Math.Content.2.OA.B.2 - Fluently subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

## Description

Chopper Charlie is needed by the forest service to help put out fires in the mountains. Help Charlie fly his helicopter to the fire and lower the water bucket to put out the flames. Don't run out of fuel and watch out for the mountains and birds!
Have fun practicing the subtraction facts while saving the day!

## Instructions

Step 1
After the game loads, select "LEVEL 1." The difficulty increases with each new level.

Step 2
Choose the fact families you would like to practice by clicking on the switches. You can choose as many fact families as you like.

Click on "INSTRUCTIONS" to see the instruction page.

Click on "TAKE OFF" to begin the game.

Step 3
Instructions - The Preflight Checklist has detailed instructions for playing the game.
- Use the arrow keys to control the helicopter (Up, down, left, right).
- Lower the bucket over the fire with the correct answer to the problem.

Step 4
The auto-pilot will lift the helicopter off the ground. As soon as you are hovering above the fire station, use the arrow keys to control the helicopter.

Step 5
As you are flying, the helicopter heads-up display is shown.
- Top display (Left to Right)
- Pause
- Mute button
- Next facts
- Helicopter lives left (You have 3)
- Lower Display (Left to Right)
- Current question
- Fuel gauge

Step 6
To put out a fire, position the helicopter and bucket directly over the fire and lower the helicopter until you are very near the flames. The auto-pilot will take over when you are in the correct position. The water will dump on the fire and the helicopter will return to the top of the screen. The next problem will be shown on the bucket as you fly to the next fire.

Step 7
If you hit the mountains or birds, the helicopter will auto-rotate to the ground.  Charlie will be OK, but you will lose a life.

Step 8
When you answer all of the subtraction problems on a level, the next one is unlocked. Practicing the subtraction facts with Chopper Challenge makes learning fun!