Indicator:
6.4.1.3 recognize and name equivalent fractions.

Students use pattern blocks and define a whole. In this case, the whole is represented by a yellow trapezoid and a blue rhombus. (It is important that students understand that a whole is simply what you define it as. A picture of a whole should not always look like a pie.) The student makes the whole on the triangle grid paper. The student then determines other fractional values using the pattern blocks. Three rhombuses represent 3/4 of the whole. Six triangles represent 6/8 of the whole. Because 3/4 and 6/8 occupy the same area of the whole, they are equivalent. It is important that students have the opportunity to consider that equivalent fractions occupy the same area with concrete and pictorial models before introducing them to the abstract multiplicative relationship between equivalent fractions.