Lesson 12
Decimal Game Day
Lesson Purpose
The purpose of this lesson is for students to practice adding and subtracting decimals.
Lesson Narrative
In a previous unit, students learned how to add and subtract decimals.
In this lesson, students play games where they practice adding and subtracting decimals. The first game resembles the games students played in the previous two lessons. The second game has more complex rules but a simpler goal which is to make the largest number possible and then continue to add those numbers until reaching a given goal.
- Action and Expression
- MLR8
Learning Goals
Teacher Facing
- Add, subtract, multiply, and divide decimals to hundredths.
Student Facing
- Let’s play some games and practice adding and subtracting decimals.
Required Materials
Materials to Gather
Required Preparation
Activity 1:
- Each group of 2 needs a number cube.
Activity 2:
- Each group of 2 needs a paper clip.
CCSS Standards
Addressing
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 15 min |
| Activity 2 | 20 min |
| Lesson Synthesis | 10 min |
| Cool-down | 5 min |
Teacher Reflection Questions
When did students listen to one another’s ideas today in class? What norms would help each student better attend to their classmates' ideas in future lessons?