Print and Practice
Triangles and Rectangles
In this triangle and rectangle instructional activity, students color triangles red and rectangles blue in a given set of shapes. A reference web site is given for additional activities.
Curated OER
Using Centimeters to Measure the Perimeter of Triangles
In this using centimeters to measure the perimeter of triangles worksheet, 2nd graders measure 6 triangles with a centimeter ruler and write the equation used to find the perimeter.
Curated OER
Triangles in Rectangle
In this geometric shapes instructional activity, students cut out the triangles on the bottom of the instructional activity and then paste them on the rectangle at the top of the instructional activity.
Exploratorium
The Four-Square Quilt
Youngsters recognize that triangles can be combined together to make various shapes. The learning activity provides a series of seven steps that engage children in applying transformations to triangles. Pupils use a quilt template and...
Curated OER
Recognizing Shapes
What are these shapes? Learners examine pairs of six familiar shapes: circle, oval, triangle, hexagon, square, and rectangle. Each pair is placed together because of a common attribute, which is described above. Learners name the shapes...
Curated OER
Find the Hidden Shapes
What shape do I see? Pupils will use what they know about geometric figures to determine which shape is hidden behind the squares. The shapes identified in the game: square, triangle, hexagon, and decagon. This is a great warm-up activity.
Curated OER
Understanding Categories of Shapes
What are these shapes? Scholars match seven shapes to their names: rhombus, sphere, square, cone, circle, triangle, and parallelogram. Although there isn't much to this instructional activity, the shapes are nicely colored and it would...
K-5 Math Teaching Resources
2-D Shape Cards
Add some visual support to your elementary geometry lessons with this set of printable shape cards. From triangles and squares to octagons and nanogons, this simple resource can be used in countless ways to develop children's knowledge...
Curated OER
Tracing Triangles
In this tracing triangles worksheet, students trace the 4 triangles in each of the 3 rows and then draw some triangles on the back of the worksheet.
Curated OER
Recognizing Triangles
In this triangles learning exercise, students analyze 25 shapes in a full page collage. Some of the shapes have curved or jagged sides. Students circle all the triangles.
Curated OER
Triangles- Lower Elementary Geometry Coloring Page
In this lower elementary geometry worksheet, students locate all of the triangles and color them green. They color triangles in the form of a Yield sign, a sandwich, a tent, and mask.
Curated OER
Two Triangles
In this math worksheet, students examine the two triangles and they compare them to each other. The shapes are measured and labeled as comparable to each other.
Curated OER
Triangles and Things
Young learners listen to the story book The Greedy Triangle as the teacher introduces new polygon shapes. They use geometric stencils to trace a quadrilateral, a pentagon, a hexagon, and an octogon onto a foldable notepad. They identify...
Curated OER
Some Shapes
Introduce the names and properties of basic 2-D shapes. Images and defining features of the circle, rectangle, triangle, and square are shown. Each image is colorful and includes a happy, smiling face, perfect for younger learners.
Curated OER
Quick Recognizing Shapes Guide
Although there isn't anything for kids to complete in this shapes handout, they can use it as a guide for drawing shapes and recognizing their attributes. There are eight shapes described here: circle, oval, triangle, rectangle, square,...
Curated OER
Recognize and Draw Shapes
Each of these 10 shapes comes with a question for learners to answer as they analyze its attributes. They examine the following shapes: hexagon, trapezoid, pentagon, circle, diamond, parallelogram, rectangle, triangle, cube, and oval....
Curated OER
Triangles Introduction
Students explore geometry by drawing various shapes in class. In this triangle characteristics lesson plan, students identify the attributes that classify a shape as a triangle and practice using their bodies to create triangles in...
Curated OER
Make triangles
In this triangles activity, students make triangles using a pinboard and elastic bands and then drawing their triangles on the sheet. Students draw 6 triangles.
Curated OER
Triangle Shapes
In this recognizing triangle shapes worksheet, learners examine 6 different pictures and draw an x on the things in each picture that are triangle shapes.
Curated OER
Geo Jammin' By DeSign - Day 1, Lesson 4: Transformation Station
Second graders manipulate triangles to discover the concepts of slides, flips and turns of a geometric shape.
Curated OER
Shapes
Students practice identifying spheres, triangles, and rectangles and the difference between plane shapes and space shapes. They identify shapes in the classroom and complete activity sheets.
Curated OER
Shapes and Introduction to Geometry
Students make a quilt. In this geometry lesson, students discuss patchwork quilts and learn some different geometric shapes and patterns that are commonly used. Students explore designs with triangles and squares and then make their own...
Curated OER
Toe to Toe Geo
Students study triangles. In this triangle lesson plan, students compare and classify triangles while milling to music. Students will also trade triangles so they can match up with other similar triangles. Triangles are provided.
Noyce Foundation
Tri-Triangles
Develop an understanding of algebraic sequences through an exploration of patterns. Five leveled problems target grade levels from elementary through high school. Each problem asks young mathematicians to recognize a geometric pattern....
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