Discover how helicopters take off with this easy experiment.
Also learn about air resistance.
Random colour.
Suitable for 5 years and up
Buy from Play N Learn, a reputable and leading educational store in Singapore
Units | 折扣 | 单价 |
---|---|---|
1 ~ 4 | - | ¥ 44.23 |
5++ | 20% 折扣 | ¥ 35.38 |