Worksheet
Math Centre

Fractions: Adding and Subtracting

For Students 4th - 7th Standards
Young mathematicians piece together the puzzle of fractions. Starting with the addition and subtraction of fractions with like denominators, this series of example problems and skills practice exercises transitions students...
Lesson Plan
Curated OER

Adding and Subtracting Algebraic Expressions (Combining Like Terms)

For Teachers 6th - 7th
Everyone loves math when it includes food! This instructional activity tries to take the notion of combining like terms in algebra and comparing it to sorting apples and oranges. It takes a step-by-step approach to helping students...
Activity
Curated OER

Finding Common Denominators to Subtract

For Teachers 5th Standards
Subtracting fractions with unlike denominators can be overwhelming, but in this task, 5th graders work systematically to break down the procedure through three questions. The first two questions ask for pictures to be drawn along...
Lesson Plan
Curated OER

Subtract Positive and Negative Integers

For Teachers 5th - 6th
Review the concept of subtracting positive and negative integers. Learners review the rules for subtracting integers, use manipulatives to visualize the process, and complete an assessment.
Lesson Plan
Illustrative Mathematics

Operations on the Number Line

For Teachers 7th - 9th Standards
A different way to look at integers is on this number line with variables in place of numbers. Learners are to look at different expressions and describe why they think the answer would be positive or negative, depending on the location...