Setting up the board…
Take your time — nothing here can go wrong, and you can always try again.
Ready?
Gravity & Mass
Take your time — nothing here can go wrong, and you can always try again.
Full screen — no distractions
Frequently Asked Questions
- What is "Gravity & Mass" and how do you play it?
- Gravity & Mass is a free, interactive science game designed for 6th Grade students. Hop to weights and masses on other worlds. It supports 1-4 player(s), takes about 20 min, and is rated medium difficulty.
- Is this game free to play?
- Yes — Gravity & Mass 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 6th Grade students. The science content is curriculum-aligned for 6th grade 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 science skills does this game cover?
- Gravity & Mass covers 6th grade science skills through interactive gameplay. It builds problem-solving, critical thinking, and subject fluency in a fun, no-pressure environment.
More 6th Grade Science Games
Magnetism and Earth's Magnetic Field
Read about magnets and Earth's magnetic field, and tap the proof.
medium20 min
The Scientific Method
Put investigations in order, from question to conclusion.
medium20 min
Simple Machines
Wire each simple machine to an everyday example.
medium20 min
Plant and Animal Cells
Sort cell parts into a Venn diagram: plant cells, animal cells, or both.
medium20 min
Cell Parts and Structures
Wire each organelle to its job in the cell.
medium20 min
Climate Zones
Wire climate zones to what they are like.
medium20 min