NY Next Generation Math NY-2.G.2

Math2nd GradeReason with shapes and their attributes.

The Standard

Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

New York State Next Generation Mathematics Learning Standards

Teacher's field guide

What Students Need to Do: Students divide a rectangle into equal square units arranged in horizontal rows and vertical columns. They count every square to find how many cover the rectangle.
What Mastery Looks Like: A student draws a rectangle with 3 rows and 5 columns of same-size squares and counts 15 squares in all. The grid has no gaps, overlaps, or partial squares.
Common Misconceptions: Students may count grid lines or intersection points instead of square spaces. They may make uneven cells, count only the border squares, or confuse the number of rows with the total.
How to Assess It: Ask the student to partition a rectangle into 4 rows and 3 columns of equal squares, then state and explain the total number of squares.

Lesson moves

Cover paper rectangles with equal square tiles, recording the number of rows, columns, and tiles used.
Ask students to explain why a grid with 3 rows of 5 has more than the five squares seen across one row.
Play grid builder by drawing row and column cards, building the matching tile rectangle, and checking the total.
Plan a rectangular garden with equal square plots and count how many plants fit when each plot holds one plant.

Free download

$Preview of the NY-2.G.2 printable worksheet$

A ready-to-print activity worksheet aligned to NY-2.G.2, with an answer key for the teacher on its own page. No account needed.

PDF, US Letter, prints cleanly in black and white.

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