Super Tangram: Fractions, Decimals, Percent, Geometry, and Algebra

Grade Levels
6th - 9th, Homeschool
Resource Type
Formats Included
  • PDF
16 pages


This is a wonderful follow-up activity to the “Tangram Math” lessons offered on my TeachersPayTeachers store. However, it can also be used as an engaging stand-alone exploration. Students will learn the properties and vocabulary of polygons as well as integrate the learning of fraction, decimal, and percent equivalencies. As they work, they will incorporate algebraic reasoning and discourse in a seamless process.

There are three activities that use the super tangram, and you and your students may think of even more applications. They are

a) assigning values with part/whole representations (fraction, decimal, percent)

b) finding areas and/or perimeters of polygons

c) writing algebraic equations

Vocabulary: acute, area, congruent, equilateral, flip, isosceles, obtuse, parallelogram, rectangle, rhombus, right angle, rotate, scalene, similar, square, trapezoid, triangle

Total Pages
16 pages
Answer Key
Teaching Duration
1 Week
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to see state-specific standards (only available in the US).
Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of solving real-world and mathematical problems.
Solve real-world and mathematical problems involving area, volume and surface area of two- and three-dimensional objects composed of triangles, quadrilaterals, polygons, cubes, and right prisms.
Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them.
Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.
Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles. For example, arrange three copies of the same triangle so that the sum of the three angles appears to form a line, and give an argument in terms of transversals why this is so.


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