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Lesson Plan
Curated OER

Waste Audit

For Teachers 6th - 12th
Students engage in a lesson that is concerned with the concept of mental math. They perform calculations as following: recognizing a half, three quarters, and tenths. Students are also challenged to extend skills to making calculation...
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Lesson Plan
Curated OER

Smart Doubling

For Teachers 2nd
Second graders use mental math in calculations involving addition and subtraction. They study doubles facts to work out addition problems mentally using part and or whole reasoning.
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Lesson Plan
Curated OER

The Part-adder 1

For Teachers 2nd
Second graders investigate the addition of whole numbers. They mentally perform calculations involving addition and subtraction. They make sensible estimates and check the reasonableness of answers.
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Lesson Plan
Curated OER

Mental Multiplication

For Teachers 5th - 8th
Students discover how to multiply large numbers in their heads using some simple techniques. They understand that multiplying by 5 is done by multiplying by 10 and cutting the answer in half. They also understand that multiplying by 9...