Setting up the board…
Take your time — nothing here can go wrong, and you can always try again.
Ready?
Sort by Size
Take your time — nothing here can go wrong, and you can always try again.
Full screen — no distractions
Frequently Asked Questions
- What is "Sort by Size" and how do you play it?
- Sort by Size is a free, interactive mathematics game designed for Kindergarten students. Put the big things on one side and the small things on the other. It supports 1 player(s), takes about 10 min, and is rated easy difficulty.
- Is this game free to play?
- Yes — Sort by Size is 100% free with no signup required. Just open the page and start playing instantly in your browser on any device.
- What age or grade level is this game for?
- This game is designed for Kindergarten students. The mathematics content is curriculum-aligned for kindergarten level, making it a great supplement to classroom learning.
- Can my child play this game on a tablet or phone?
- Yes. All LittleActivity games work on any device — desktop, tablet, or phone. No app download needed; games run directly in the browser.
- What mathematics skills does this game cover?
- Sort by Size covers kindergarten mathematics skills through interactive gameplay. It builds problem-solving, critical thinking, and subject fluency in a fun, no-pressure environment.
More Kindergarten Mathematics Games
Tall and Short
Line things up from shortest to tallest.
easy10 min
2D Shapes
Sort flat shapes: round ones and ones with corners.
easy10 min
Shape Safari
Hunt the flat shapes hiding in the grass.
easy10 min
Shape Builder
Copy the shape square by square.
easy10 min
3D Shapes: Spheres, Cubes, Cylinders and Cones
Sort solid things by their shape.
easy10 min
3D Shape Hunt
Find the solid shapes hiding in the toy box.
easy10 min