Reveal Math Kindergarten, Unit 10: 2D Shapes
In this unit, your child names flat shapes, such as circles, triangles, squares, rectangles, and hexagons; finds them in everyday objects; and describes where things are. They also compare shapes by counting sides and corners. After a unit on adding and subtracting, this one turns to shapes and leads into solid shapes next.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Unit 10?
- Finding flat shapes in everyday objects, like a rectangle in a door, and using position words such as above and beside. Learn more: Spotting shapes and saying where things are
- Naming circles, triangles, squares, rectangles, and hexagons, even when they are turned, tilted, or a new size. Learn more: Naming shapes turned any which way
- Comparing flat shapes by counting sides and corners, noticing that squares and rectangles both have 4 of each. Learn more: Comparing shapes by their sides and corners
Sample questions to try together
These are real questions from our practice. Tap the speaker to hear one read aloud, or the light bulb for a hint, and talk about the answer together.
Question 1 of 3
What shape is a slice of pizza?
- Triangle
- Circle
- Square
How you can help
- Look for flat shapes on a walk or ride, such as rectangle windows, circle wheels, and triangle yield signs. Ask your child where each one is: above, below, or beside something.
- Draw a few shapes on paper and turn the page around. Ask your child to name each shape again in its new position.
- Count the sides and corners of a book, a napkin, and a plate. Talk about which shapes match and why the round plate has no corners.
Where kids can get stuck
- Rejecting a long, thin triangle because it does not look like the usual triangle.
- Calling a rectangle lying on its side a different shape from one standing up.
- Describing shapes by color or size instead of counting their sides and corners.
Practice makes perfect
Bobby's Math Club has practice problems that adapt to your child’s level, each with a detailed explanation and an easy-to-follow video, so your child can build confidence in these skills one step at a time.
Words your child will hear
- circle
- A round, flat shape with no sides or corners.
- triangle
- A flat shape with 3 straight sides and 3 corners.
- square
- A flat shape with 4 equal sides and 4 square corners.
- rectangle
- A flat shape with 4 straight sides and 4 square corners.
- hexagon
- A flat shape with 6 straight sides and 6 corners.
- side
- One of the straight lines that make up a flat shape.
- corner
- A point where two sides of a shape meet.
- flat
- A shape you can draw on paper, like a square or circle.
- beside
- Right next to something, at its side.
Want to help your child master flat shapes?
In Bobby's Math Club, your child practices these skills at just the right level, with a hint when they need one, a clear explanation after every question, and kid-friendly videos. Unlimited practice is free.
Join the club
Written by Robert “Bobby” Barnett
Bobby is an award-winning math teacher, the author of Meet Every Learner’s Needs, and the father of two elementary-school math learners. He uses Bobby’s Math Club with his own kids a few times every week. Learn more or contact Bobby.
Which math standards does Reveal Math Kindergarten Unit 10 cover?
Reveal Math Kindergarten Unit 10 covers these math standards. Each one links to what it means, sample questions, and teaching strategies.
For teachers: Unit names and order vary between editions and districts, so your school’s own materials have the exact sequence. Learn how Bobby's Math Club can help your students grow.