We have the netball - but no net! Can you design and build a netball net for us, and then show us how to score a goal in it?
Levels of difficulty:
Level 1 - Make a hoop large enough for a netball to pass through
Level 2 - As level 1, with a stand to hold it 0.5m from the ground, and then score a goal in it from 0.5m away without it breaking
Level 3 - As level 2, and play a game of netball
Equipment: KNEX set, plus a sponge ball of similar size to a netball.
Approach: Look at the netball. How wide is it? How can you make a hoop from KNEX that the ball will just pass through?
For level 2, how could you make a stand for your hoop? Will it be strong and stable enough? How can you support the hoop so it stays horizontal, even if the ball touches it as it passes through?
For level 3, can you find a friend who has also made a net, and then organise and play a game of netball?
Handy Hints (please click to view):
A2 - 3 ways to connect K'NEX rods and connectors
A4 - Making corners with blue & purple connectors
A5 - Strong 3-D structures
The aim of the project is to build a strong, stable structure for a specific purpose, and then test it.
Possible solution: See photo.
Before starting: Examine a real netball stand and hoop.
Conclusion: Compare the techniques that different children have used to achieve strength and stability in their models.
Copyright © Andy Shercliff 1996 and K'NEX User Group 2004