Gallery Problems

Gallery Problems

Represent a Math Problem

Work Time

Represent a Math Problem

  1. Explore each of these math representations: a number line and a double number line.

    • Select one representation to describe to the class.
  2. Solve this problem. Use a number line or a double number line to help you solve it.

    The cheetah at the zoo has a mass of 45 kg. This is 5 times the mass of the fisher cat.

    • How many more grams is the mass of the cheetah than of the fisher cat?
  3. The cheetah at the zoo has a mass of 45 kg. This is 5 times the mass of the fisher cat. How many more grams is the mass of the cheetah than of the fisher cat?

    Mia says:

    “The mass of the cheetah is 36 g more than the mass of the fisher cat.”

    • Is Mia’s answer reasonable? Explain.

Research Expressions

Work Time

Research Expressions

Research to learn about the difference between a numerical expression (such as 2 + 3) and a variable expression (such as x + 2).

  • Search using a few different keywords to find resources. Follow any links that look useful.
  • Watch video tutorials about expressions.
  • Review worked examples of expression problems.
  • Look up expression in the dictionary.

Write your answers to the following questions:

  • How is a numeric expression different from a variable expression?
  • What are five things you think you will learn about expressions this year?
  • When is it useful to research a concept?

Fish Tank

Fish Tank

Anna has a 5 gal fish tank. She buys a new fish tank. It holds 4 times as much water as her old fish tank. Anna adds 18 qt of water to the new fish tank.

  • Create a diagram to represent the situation.
  • If Anna wants the new tank to be completely filled, how many more quarts of water does she need to add?