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Posts by Barbra
There are array types appropriate for all stages of math learning from counting through mid-level algebra. They help bridge new ideas to old, give students tools to explore and dive deeply into...
This post contains affiliate links. If you purchase through these links, I may earn a small commission at no additional cost to you. You can read more about how I choose affiliates and products...
This post contains affiliate links. If you purchase through these links, I may earn a small commission at no additional cost to you. You can read more about how I choose affiliates and products...
We can add numbers -- even large numbers -- without carrying. Carrying is really just a shorthand notation for thinking of 10 units in one place value as 1 unit in the next place value. Thus, it's...
Algebra tiles are arguably the most common and useful manipulative in the algebra classroom. They are also one of the most misunderstood. Advocates are wholehearted and love to show off the exciting...