Exploring the Interaction of Positive and Negative Numbers

What is generally considered to be something positive?

• Something you desire

• Something you want to avoid

• Something that is unknown

• Something that is neutral

Which color block represents positive numbers?

• Red

• Yellow

• Blue

• Green

What happens when a positive block meets a negative block?

• They both disappear

• They change colors

• They both double

• They turn into a neutral block

In the example 23 + (-19), how many green blocks are used?

• 4

• 0

• 19

• 23

In the example 23 + (-19), how many red blocks are used?

• 0

• 19

• 23

• 4

After pairing the blocks in the example 23 + (-19), how many green blocks are left?

• 0

• 4

• 19

• 23

What is the result of 23 + (-19)?

• Zero

• Positive 19

• Negative 4

• Positive 4

What should you do after pairing all the red and green blocks?

• Count the remaining blocks of both colors

• Remove all blocks

• Count the remaining green blocks

• Count the remaining red blocks

If you have leftover green blocks, what does it indicate?

• Zero

• An error in calculation

• A positive sum

• A negative sum

If you have leftover red blocks, what does it indicate?

• A positive sum

• An error in calculation

• Zero

• A negative sum