Bree Bezy
Rachel Weir
ITDPT 364 - 2
Objectives:
Children will be able to predict the direction in which the final gear
will turn.
Children will create their own gear system using a variety of K'nex.
Science
Standards Correlation:
3.6 Motion
Students
should know that:
Things move in many different ways, such as straight, zigzag, round and
round, back and forth, and fast and slow.
7.4 Uncertainty
Students
should know that:
Some things are more likely to happen than others. Some events can be predicted
well and some cannot. Sometimes people aren't sure what will happen because
they don't know everything that might be causing an effect.
Procedure:
1. We will first present the gears, and explain the concept of gears.
Gears are toothed or pegged wheels meshed together to transmit motion and
force. In any pair of gears the larger one will rotate more slowly
than the smaller one, but will rotate with greater force.
2. We will then show the gear system that we have created.
We will show how the gear system works. We
will ask the children if they have ever seen the type of gears we have
used here.
3. We will then talk a few minutes about prediction. The children
will then be asked to predict the direction of the final gear when a center
gear is rotated on the gear system.
4. The students will design and build their own gear system using
a variety of K'nex.
5. The children will then trade and predict directions of other gear
systems.
Evaluation:
We will evaluate mainly by observation and verbal questioning. We
will be looking for knowledge of prediction and understanding of how the
system works.
Links
for Additional Information:
K'nex Homepage
Scott's
K'nex Design Gallery
More fun things to make with K'nex:
Compliments Of Shawn Hartig