South Carolina Academic Standards for Mathematics
4th Grade
Number and Operations
Standard 4-2: The student will demonstrate through the mathematical processes an understanding of decimal notation as an extension of the place-value system; the relationship between fractions and decimals; the multiplication of whole numbers; and accurate, efficient, and generalizable methods of dividing whole numbers, adding decimals, and subtracting decimals.
Lessons (2)
Students learn how to convert from fractions to decimals.
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.