Understanding Two Color Counters

This lesson introduces subtracting integers using two-color counters. It explains how yellow counters represent positive integers and red counters represent negative integers. The lesson covers simplifying counters to represent integers and provides examples of subtracting both positive and negative integers. The lesson concludes with a preview of the next lesson, which will involve adding extra zeros to perform subtraction.

What does a yellow counter represent in this lesson?

• Positive one

• Zero

• Negative one

• Positive two

How can zero be represented using two color counters?

• Two yellow counters

• Two red counters

• One yellow and one red counter

• Three yellow counters

What happens when you have three red and three yellow counters together?

• They simplify to zero

• They represent positive three

• They represent negative three

• They represent positive six

In the example of seven minus four, how many yellow counters are left after subtraction?

• Four yellow counters

• Three yellow counters

• One yellow counter

• Two yellow counters

What is the result of seven minus four using two color counters?

• Positive four

• Positive three

• Negative three

• Zero

How is negative eight represented using two color counters?

• Eight yellow counters

• Eight red counters

• Four yellow and four red counters

• Five red and three yellow counters

In the example of negative eight minus negative three, how many red counters are left after subtraction?

• Zero red counters

• Two red counters

• Three red counters

• Five red counters

What is the result of negative eight minus negative three using two color counters?

• Negative five

• Negative three

• Zero

• Positive five

What will the next lesson focus on according to the conclusion?

• Dividing integers

• Multiplying integers

• Adding integers

• Adding extra zeros for subtraction

What is the main purpose of using two color counters in this lesson?

• To add integers

• To multiply integers

• To represent and subtract integers

• To divide integers