Introduction to Estimation and Making Arrays
Students explore the concept of estimating and organizing a group of objects into an array to count the exact number of items. They create their own arrays and practice elements of estimation.
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Ten-Frames – A Games Approach to Number Sense
"How can you help students visualize numbers in a way that is compatible with our base-ten number system?" The answer is simple: use ten-frames. Whether they're being used as a part of classroom routines or as instructional tools, this...
K - 3rd Math CCSS: Adaptable
New Review Reasoning About Multiplication and Area
How are area and multiplication related? It turns out that they are one in the same. Use a performance task to assess third grader's ability to reason about area using tiling and multiplication. They must demonstrate their ability to...
3rd Math CCSS: Designed
Find the Area of a Rectangle by Counting Columns and Rows
When finding the area of rectangles, understanding the arrangement of unit squares in rows and columns is essential. The visual models included in this instructional video help to clearly define rows and columns for young mathematicians,...
6 mins 2nd - 4th Math CCSS: Designed
Find the Area of a Rectangle by Partitioning it into Arrays of Same Size Squares
Tiling is a great method to use when introducing young mathematicians to the concept of area. In the second video of the series, this process is clearly modeled both by laying down unit squares in arrays and by drawing lines to create...
8 mins 2nd - 4th Math CCSS: Designed