Looking for some fun and fresh ideas for kicking off your geometry unit on solid figures? Try one of these three, easy activities for teaching 3D shapes in your Kindergarten or first grade classroom!
1. Mystery Bag
A fun way to kick off a geometry unit on 3D shapes is using a "Mystery Shape Pack" or mystery bag. An oversized laundry sack or yard trash bag will easily hold and conceal many objects. Find items around your house or classroom for each of the solid figures you are teaching. You can also have students bring in items from home to add to the mystery bag. After you have gathered a sufficient number of items, gather your class on the carpet, do a big reveal of each item in the bag, and classify them by shape. After the items are sorted, discuss the attributes of each group. Check out some of the fun 3D shape items from our mystery bag: foam roller, shoe box, Magic 8 ball, Rubik cube, Pokeball, chocolate kiss, Pringles can, battery, bouncy ball...
It's fun to display the mystery solid figures as a shape museum during the unit. Seeing the visuals will help students discover and understand that color, size, and orientation are non-defining attributes.
2. Food
What better way to pique your students' interests and help them learn about solid figures than by shape tasting! Create a 3D "restaurant" in your classroom and allow students to "order" a different food from each shape group on the menu. So many easy, yummy, fun foods to include!
Cube: Cheese and caramel
Cylinder: Bubble gum, pretzel rods, string cheese, tootsie rolls, marshmallows
Sphere: Cheese balls, Whoppers candy, Kix cereal
Rectangular Prism: Juice box, wafer cookies, Kit Kat
Cone: Bugles, Hershey kiss, ice cream cone
3. Discovery
Kids need to be touching the shapes, so it's essential to use manipulatives! Don't just tell students how many faces a cube has. Let students hold the cube, trace the square face of the solid figure, and run their fingers along the edges of the cube. The shape museum should be hands-on and interactive. PlayDoh plus solid figures equals discovery fun!
I created an anchor chart for 3D shapes that is interactive and can be used year after year! I made the lines with Washi Tape. Post-it notes are easy to remove from the chart. This can also be used as a math center with students completing the chart with sticky notes.
You probably have geometric solid manipulatives in your classroom, but if not, I would recommend this set from Learning Resources. I love that you can see through them. 
After students have had the opportunity to touch and discover 3D shapes and manipulatives, check out this resource chock-full of worksheets, games, and printables for independent practice, homework, and assessments. 
Happy Teaching!
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