## Prepare a Presentation

## Work Time

# Prepare a Presentation

- Choose one equation or inequality that you created in the Balance Scale interactives that you think is particularly interesting.
- Use this equation/inequality to explain your understanding of equations and/or inequalities. In your explanation, refer to the corresponding scale you created using the interactive.

# Challenge Problem

NOTE: Ignore the instructions in the interactive and follow the steps below.

- Place a number on the left side of the scale.
- Place a different number on the right side.
- Is there any one number you can now add on both sides that will balance the scale? Explain.

INTERACTIVE: Balance Scale B

## Hint:

- Think about the definitions of
*equation*and*inequality*:- An
*equation*consists of two equivalent expressions that are linked by an equal sign. - An
*inequality*consists of two nonequivalent expressions that are linked by a less than sign (<) or a greater than sign (>).

- An