National Council of Teachers of Mathematics
Improving Archimedes' Method
For this Archmides' method instructional activity, high schoolers determine the area of a regular n-gon inscribed in a circle. They use sine and cosine functions to solve problems. This three-page instructional activity contains 4...
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Operations with Fractions and Decimals
Complete a lesson that introduces and explores operations with fractions and decimals. Pupils estimate the reasonableness of a decimal computation. Then discuss what operation is needed to find an answer. Handouts, web sources, and other...
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Frost Depth Study
Students complete activities to study the frost and frost depth. For this frost study lesson, students use frost tubes to study and measure the frost at their school. Students measure the frost in the tube and enter their data online to...
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Special Snack
Students explore grocery store circulars to choose items for a snack. In this snack math lesson, students must plan a class snack for $20.00. Students create a list estimating costs. Students view lists and choose one for their class. ...
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Estimate Sums and Differences
For this estimating sums and differences practice worksheet, students sharpen their problem solving skills as they solve 6 story problem.
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Decimals: checkbook and money
In this decimal learning exercise, students complete problems having to do with a checkbook, money, the cost of items, and more, with numbers containing decimals. Students complete 3 problems.
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Estimate Products: Reteach
In this estimating products worksheet, students review two steps to help estimate products. Students then estimate the products by rounding the factor greater than 10 to its greatest place.
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Estimate Quotients and Check Division With Multiplication
Learners explore how to estimate quotients and check their division with multiplication. They practice rounding the divisor and the dividend. Students compare the estimate to the exact answer and determine if it is reasonable.
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Multiply Whole Numbers and Decimals: Reteach
In this whole number and decimal multiplication worksheet, students review the three steps to multiply whole numbers and decimals. Students then find the products for the sixteen problems.
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Measuring Me
Fifth graders examine the importance of accurate measurement both in customary and metric units. Through hands on measurement activities, they compare and contrast the accuracy of their measurements with the measurements of other...
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Subtracting Whole Numbers and Decimals
In this math worksheet, students learn to subtract whole numbers and decimals. Students are given step by step directions on how to solve one sample problem, then complete 5 examples on their own. Example: 6.57 - 3.28. There is...
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Year 5, Term 2, Unit 7
Here is a challenging presentation which should be tough for even your top math learners. In it, pupils view 86 slides which take them through many mathematical concepts such as doubling, halving, decimals, word problems, and converting...
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All Those Advertising Dollars!
Students calculate percent increases (or percent decreases) for the top 25 companies in terms of advertising dollars spent during a year.
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Accuracy of Calculations
In this accuracy of calculations instructional activity, students solve and complete 4 different types of problems. First, they estimate the solution of the calculations shown. Then, students find the maximum and minimum possible values...
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ADULT ESOL LESSON PLAN--Concepts of Time and Money
Students identify different denominations of United States currency and symbols associated with money and reading prices. In addition, in pairs they identify examples of currency from newspapers and magazines.