1st Grade - Triangles, Circles And Other Shapes

Shapes and Geometry
Triangles, Circles and Other Shapes
Identify, describe, compare triangles, rectangles, squares, and circles, including the faces of three-dimensional objects.
The student will be able to describe and compare a variety of shapes including triangles, rectangles, and circles. They will also be able to describe the faces of three dimensional objects.

Sample Problems


Describe a circle. (round, continuous)


Describe a square. (four straight sides that are all the same sides)


Describe a rectangle. (four straight sides. Two sides are smaller than the other two sides.)


Describe a triangle. (three straight sides, three points)


What is the difference between plane and 3 dimensional shapes. (Plane shapes are flat. Three dimensional shapes are solid and have more than one surface.)

Learning Tips


Shape and 3-D Object Review: Review the difference between a plane (flat) shape and a 3-D shape. Ask your child to go around your home and find examples of plane shapes and 3D shapes. After they have finished gathering their shapes, then have them sort the shapes into two groups (plane and 3-D). Compare the shapes discuss similarities and differences.


Descriptive Shape Vocabulary Chart: A good way to help your child increase their mathematical vocabulary is to help them create a vocabulary chart of descriptive words. On a large piece of butcher paper label the top of the page with the words “Shape Vocabulary.” Next help your child to make a list of vocabulary and descriptive words that will describe a variety of shapes, both plane and 3D shapes. Each night before they go to bed ask them to find a word on the chart and use it to describe a shape. Have them draw the shape and discuss other vocabulary words they could use in describing the shape.


Shape Riddles: This is a version of the game “I Spy.” For this activity, either you or your child will need to scan the room and secretly pick out a shape. After you or your child has determined what shape you have “spied” you will then need to state “I Spy, with my little eye something that is ______.”In the blank, a describing word will need to be added to help assist the person trying to guess the shape. As the game progresses, more vocabulary words will be presented and will lead the person guessing to the “spied” shape. Once the person making the guesses has correctly identified the shape in question, they the guesser becomes the person who “spies” the shapes and gives the descriptions. This game will reinforce vocabulary and make sure that your child has a clear understanding of the different attributes of the different shapes.


Searching for Shapes: For this activity, you will need to have numerous index cards with a different shape on one side of each card. The cards should include both plane and three dimensional shapes in a variety of sizes. You will need at least two players, but 4 players can make the activity even more fun. Each group of two will act as a team and take turns drawing shapes and attempting to earn points. For example, let’s use an example of a mother and child are playing the game. The mother would pick a card with a shape and she would then need to use different vocabulary words to try to have the child guess what the shape is. When the child guesses the correct shape, they would then reverse roles. If 4 players play the game then you can begin to keep track of team points and set a timer to see who wins


Shape Flashcards: Have your child make their own shape flashcards using pictures from magazines and blank index cards. Each day ask your child to pick a shape, either a plane shape or a three dimensional one. Next have them focus on finding as many pictures as possible, of that particular shape, in magazines. Once they locate the pictures have them cut them out and glue each picture on a blank index card. Once they have quite an assortment of shapes, use the cards to practice describing the shapes. You can also have them sort the cards and discuss why they placed each card in each group.

Extra Help Problems


Circle the shape that is flat.


Put an x on the shape that has 3 corners. (triangle)


Color the flat or plane shape red.


Trace the shape that has four corners. (rectangle)


Circle the shape that is round. (circle)


Put an x on the shape that is three dimensional (not flat). (a box)


Color the three dimensional shape green. (a cylinder)


Trace all of the rectangles in the row below.


Circle all of the circles in the row below.


Put an x on all of the triangles in the row below


Color only the three dimensional shapes in the row below. (box, soda can, and basketball)


Trace all of the squares in the row below.


Circle all of the triangles in the row below.


Put an x on the shape that has no corners (circle).


Color all of the triangles orange.


Trace only the small triangles using a yellow crayon.


Circle all of the shapes that have straight edges (rectangles and squares)


Count how many corners a triangle has. (3)


Trace all of the rectangular prisms in the row below.


Circle the shapes that are rectangular prisms.


Circle all of the corners on the rectangular prism below. Remember a corner is the place where to sides meet.


Draw an example of something that is a sphere.


Draw an example of something that is a cylinder.


Draw a picture of something in your classroom that is a triangle.


Draw a picture of something from your bedroom that is a rectangle.


Related Games


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