Common Core State Standards
Fifth Grade
Number and Operations in Base Ten
Understand the place value system.
Lessons (2)
Introduces students to modular (clock) arithmetic and its uses in real world problem-solving.
Introduces students to the concept of base ten and how to use other base number systems.
Activities (2)
Work with various types of clocks in order to learn about modular arithmetic operations. Parameters: Number of hours on the clock.
Visually explore counting and place value with different number bases, from base 2 to base 16, and up to the hundreds place using a clock like interface. The activity also allows you to look at the numbers on the clock in base 10 or in your other chosen base to explore the relationship between those values.