Canal Lock
How boats climb hills: a canal lock with gates and valves. A gate opens only when the water is level on both sides, so the order matters.
- 9–12 years
- Read aloud
- No ads
- EN · БГ · РУ · УК

What your child learns
- How a canal lock works
- Water finds its own level
- Doing steps in the right order
How to play
Open a valve to level the water, then the gate, move the boat in, close up and level the other way. One lock up (the next control glows), then down, then a staircase of two locks.
Levels
- Level 1Up through one lock.
- Level 2Down through one lock.
- Level 3A staircase of two locks.
A tip for parents
Look up a canal near you, or a video of boats in a lock, together.
Works on phones, tablets and computers, with nothing to install. No ads and no tracking.