Lesson 4

Addition with Triangle Flash Cards

Est. Class Sessions: 1

Daily Practice and Problems

Teacher Notes
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The ongoing project, Hundreds of Coins, was introduced in Unit 1. Activities and possible prompts through Day 25 and Day 100 are included in Unit 1 Lesson 1. Students can use a doubling strategy to find out how much is in 2 jars, then in 4 jars.

K. Coin Jar 2

Add one penny to each coin jar.

  1. How many pennies are in each jar?
  2. Can trades be made today? Why or why not?
  3. How much money is in all four jars together? How do you know?
  4. In 5 days, how much money will be in the Dime jar?
  5. In 5 days, how many nickels will be in the Nickel jar?