Make a Difference
Students are introduced to the resource economies of recycling aluminum cans. They develop understanding about their own impact on the amount of solid waste produced and recognize the impact of recycling on energy and natural resources.
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Models for Teaching Addition and Subtraction of Integers
Positive and negative numbers are everywhere in the world around us. Whether it's charged particles in atoms, a hot air balloon rising and falling in the sky, or a series of bills and checks being delivered in the mail, this resource...
5th - 8th Math CCSS: Adaptable
Substituting to Evaluate Addition and Subtraction Expressions
Substitute this resource for what you used to use. Learners identify patterns in data tables and write addition and subtraction expressions to represent relationships. Substitution allows them to solve problems in context in the 20th...
6th Math CCSS: Designed
New Review Understanding the Effects of Differences in Speed—Problem Set D
Fall back and slow down. The fourth lesson in a six-part series on air traffic control leads the class to find the difference in distance traveled based upon the difference in speed. Pupils work through a problem related to walking...
5th - 9th Math CCSS: Adaptable