+
Lesson Plan
Curated OER

Fact Families

For Teachers 5th
Fifth graders explore fact families. They solve simple math problems. Students determine which mathematical property is used to solve the given problem. They are given five minutes to complete as many mathematical facts as possible.
+
Organizer
Curated OER

9's Addition Table

For Students 2nd - 3rd
In this addition table worksheet, students practice their 9's times tables. Worksheet is a complete table and is a reference for students.
+
Organizer
Curated OER

Addition Table 6's

For Students 2nd - 3rd
In this addition table worksheet, students practice their 6 times tables. Worksheet is a completed table for student practice. 
+
Lesson Plan
Curated OER

Arithmetic: Revision

For Teachers 4th - 7th
Students practice with a variety of simple equations involving addition, subtraction, multiplication and division. Explanation is followed by each block of equations given to solve. They are set loose to complete additional equations for...
+
Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 5th
Fifth graders investigate the concepts of composite and prime numbers. They factor different numbers and determine the number of factors for each. Based upon this information the number is declared prime or composite.
+
Lesson Plan
Curated OER

Clock Arithmetic and Cryptography

For Teachers 9th - 12th
Students investigate modular clock arithmetic and cryptography. They perform basic operations in modular (clock) arithmetic and encode and decode messages using simple shift and affine ciphers.