Lesson Plan
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Great Big House

For Teachers 3rd
Third graders sing and play the song "Great Big House" in the Orff style using soprano and alto glockenspiels, bass xylophones, bass marimbas, triangles, woodblocks, and the singing voice. The instructional activity includes...
Worksheet
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Transformations in the Coordinate Plane: Practice

For Students 6th - 7th
In this transformations learning exercise, students identify the coordinates of triangle MNO after completing three translations and one reflection. Students use the triangle MNO with given coordinates to complete each transformation on...
Lesson Plan
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Perimeter and Area of 2D Shapes

For Teachers 6th - 7th
Students find the perimeter and area of circles, triangles, and rectangles. In this perimeter and area lesson, the teacher gives students formulas for each shape and measurement and works through examples on the board. While no creative...
Lesson Plan
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Seeing Shapes

For Teachers K - 1st
Students discover different geometric shapes such as triangle, square, rectangle, and octagon. Students incorporate the use of technology by taking pictures of shapes around their school using a digital camera.
Lesson Plan
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That's So Square

For Teachers 2nd
Second graders are introduced to circles, triangles and parallelograms. As a class, they create the shape with their bodies and are shown the shapes in their actual size. To end the lesson, they sketch each shape and identify their...
Lesson Plan
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Pythagorean Theorem Investigation

For Teachers 8th
Eighth graders investigate the Pythagorean Theorem and practice applying the theorem to various triangles. Finally, in the next lesson in the sequence, 8th graders create a song or a story to help them remember the Pythagorean Theorem.
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Geometry: Area

For Teachers 2nd - 6th
Students visit various websites to calculate the area of circles, triangles, rectangles, trapezoids, and parallelograms. They explore math problems and play interactive games dealing with geometry.
Lesson Plan
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Math: Tangents

For Teachers 9th - 10th
Students discover how to recognize tangents and how to use their properties. They investigate and use the properties of angles, arcs, chords, tangents, and secants. Students use two tangents and the properties of similar triangles to...
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Turn Symmetry

For Teachers 4th
Fourth graders observe geometric patterns to determine if they show rotational or point symmetry. They participate in the a demonstration instructional activity with a triangle. They create their own designs that show rotational or point...
Lesson Plan
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Biology Tessellations

For Teachers 7th - 12th
Students review three types of polygons that are triangles, squares, and hexagons. They use a computer program to draw various types of tessellations. The students use the drawing of a honeybee as inspiration.
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Fractions

For Teachers 1st
First graders are asked to put their fingers on their triangles that looks like the one that is on the overhead. They are asked to tell how they would write a fraction for this one part. Students go through step one until all of the...
Worksheet
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Transformations in the Coordinate Plane: Reteach

For Students 6th - 7th
In this transformations worksheet, students review the terms and example diagrams for a translation, reflection, and rotation. Students then identify the coordinates for a triangle after completing the given transformations in the four...
Lesson Plan
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Shapes

For Teachers K - 2nd
In this early childhood math worksheet, pupils practice distinguishing shapes as they match the square, triangle, circle, pyramid, and cube shapes to the appropriate names in the right-had column.
Lesson Plan
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The Pythagorean Theorem

For Teachers 7th - 9th
Students explore the concept of the Pythagorean Theorem.  In this Pythagorean Theorem lesson, students discuss how the Pythagorean Theorem is used in their lives.  Students imagine building a lean-to that is 3 ft. high and 4...
Worksheet
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Identifying Shapes

For Students 2nd - 3rd
In this shapes worksheet, learners identify shapes, including triangles, squares, rectangles and circles. A reference web site is given for additional activities.
Worksheet
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Measurement Word Problems 7

For Students 4th
In this measurement worksheet, 4th graders complete word problems where they find different measurements of different shapes such as a table, a plank, a triangle, and more. Students complete 15 problems.
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Setting Solutions

For Teachers 9th - Higher Ed
Students piece together a quilt from leftover blocks. They problem-solve ways to incorporate random block designs into a visually pleasing quilt design. They used sashed sets, coping stripes and triangles to work out the design.
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Math: Musical Patterns

For Teachers K
Students employ their five senses to interpret and duplicate instrumental patterns. Following the teacher's patterns, students clap their hands and later use instruments such as bells, triangles, or cymbals to create their own "songs."
Worksheet
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Counting Geometric Shapes 1-9

For Students Pre-K - K
In this math activity, students count the number of geometric shapes in each of 4 squares. They circle the correct number of items in each group and color the circles, squares, triangles, and diamonds.
Worksheet
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Counting Shapes

For Students K - 1st
In this counting activity, students count how many shapes they see in a row, 3 rows total. Shapes are circles, triangles and rectangles, numbers are 2, 3, 5.
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Trace a Sand Castle

For Teachers Pre-K - K
In this tracing worksheet, students trace the dotted sand castle picture. Students then color the picture any way they like. Most dotted lines are curved but there are triangles as well.
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Identifying Shapes

For Students 3rd - 4th
In this shape identification worksheet, students identify shapes as circles, triangles, squares or rectangles. A reference web site is given for additional activities.
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Symmetry

For Teachers 6th
Sixth graders explore symmetry and discuss the difference between a rotation and reflection. Using hands-on activities, such as folding paper shapes, they discover how to find the lines of symmetry and symmetrical characteristics. As a...
Lesson Plan
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Law of Sines

For Teachers 10th - 12th
In this Law of Sines worksheet, students describe, in their own words, when to use the law of sines. They give an example of a problem using the law of sines. This two-page worksheet contains one problem and a sample answer.