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South Carolina Academic Standards for Mathematics
5th grade
Numbers and Operations:
The student will demonstrate through the mathematical processes an understanding of the place value system; the division of whole numbers; the addition and subtraction of decimals; the relationships among whole numbers, fractions, and decimals; and accurate, efficient, and generalizable methods of adding and subtracting fractions.
Calculating...
Lesson  (...)
Lesson: Introduces students to fractions and explores basic mathematical operations with fractions, comparing fractions, and converting fractions into decimals or percents.

Lesson: Introduces students to the concept of base ten and how to use other base number systems.

Activity  (...)
Activity: Work with various types of clocks in order to learn about modular arithmetic operations. Parameters: Number of hours on the clock.

Activity: 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.

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