Expand on prior knowledge of place value to teach your class how to round whole numbers. This essential skill is explained with the help of a number line before introducing the explicit rules for rounding numbers up and down. Work...

Estimating is an essential skill used in everyday life. This presentation explains how to apply prior knowledge about rounding numbers to estimating sums and differences. Example problems and assessment include large numbers, making this...

It seems like it should be about three. Pupils learn to get an estimate of the derivative of a function at a point by using the derivative functionality of their graphing calculators. They take that information to determine the equation...

Third graders demonstrate their estimating and measuring abilities.  In this length measurement lesson, 3rd graders produce estimates of how long a handful of French fries will be before physically measuring them.  Students...

Learners explore linear measurement. They choose appropriate measuring tools, measure three classroom items, and record their results.  A class discussion ensues in which everyone decides the best way to present their data.

Students practice counting and comparing objects.  In this math lesson, students view a Count on It! episode. Students examine the value of what they are counting.  Students estimate number in groups of items.  Students...