California Early Math Project 2020

More or Less
by Stuart J. Murphy
Eddie must guess the player’s age correctly to keep from getting dunked in the pool. Could it be luck or his math skills that are keeping him dry? Will anyone succeed at getting Eddie dropped into the pool?
Resources for More or Less
Full Book Review (English)
Full Book Review (Spanish)
Brief Book Review (English)
Brief Book Review (Spanish)

Can Eddie’s math skills keep him from getting dunked?

 

Math Connections: Use this book to introduce:

     Comparison           Even

     Odd                       Strategy

     Reasoning

 

Activities to Do Together:

Practice guessing a mystery number. Take turns guessing.

• Discuss the types of questions that help to eliminate numbers.

Guess someone’s birthdate.

Guess how tall someone is in inches.

Extension Questions:

  1. Explain the strategy behind Eddie’s guesses. How does he guess the ages of the people at the big picnic?

  2. Why do you think Eddie asks people if their age is below 50?

  3. What questions would you ask if you were Eddie? Why would you ask those questions? What would they tell you?

  4. What is a good first question if you were guessing a number between 1 and 20?

 

Vocabulary for Building Math Concepts

more, less, greater, fewer, older than, younger than, even number, odd number, between, at least