Dynamic Paper Tool
Here’s a great resource from the National Council of Teachers of Mathematics Illuminations site that allows you to print customized …
Previous articles
Points of Concurrency
Many real-life problems can be considered from the point of view of centroids, circumcenters, orthocenters, and incenters of triangles. Here …
Progression for Instruction on Fractions
If a fraction is a piece of pie, how can we make students understand multiplying two pieces of pie? – …
Problem of the Week 12/17/012
Ms. Hershey rewards students with a piece of chocolate (approximately 60 calories) for every day that they hand in an …
Problem of the Week 12/10/12
Alexis has two cats, Sister and Sushi. If she takes 3 fewer than 5 times Sister’s age and doubles this …
Problem of the Week 12/3/2012
Some fun with geometry: 1) A rectangular container is 3/4 filled with oil. The length, width, and height of the …
Problem of the Week 11/26/2012
Somehow missed this week, so here’s a Cyber Monday problem set courtesy of MathCounts: This year, Xavier purchased a new …
Subtraction with regrouping: Focus on number sense
Subtraction with regrouping is often the nemesis of math teachers; it is one of those topics that many students just …
What mathematics do teachers need to know?
For anyone planning to teach K-12 mathematics in the era of the Common Core Standards, this report from the Conference Board …
Fun with large numbers, Fermi, and David Schwartz
If you placed quarters end to end all along the equator and then got to keep them all, how much …
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