working in pairs : we measure colorful tape to decorate our rain sticks.
these kinders going to 1st grade are really special : measuring a large
sheet of stiff paper to make the folds necessary for our portfolios :
she asks me 'why is the line not straight' : i explained 'we need to fold
an angle so the portfolio will be bigger inside to hold all our projects.'
: smiling : she nodded in agreement : she understood immediately
see more of the students working
sounds are made by energy, movement, and vibration
terms of Physics, we could first consider energy. If you 'play' it by tilting it one way and then the other, then your arm is the source of energy. The beads inside are initially supplied in this way, with gravitational potential energy. As they fall, they lose it to gain kinetic energy. However they continually collide with the spikes, and with each other. In this way, some of the energy converts to sound. Because of the randomness and nature of the collisions, I would imagine that the sound could be described as 'white noise', sound which consists of a wide range of frequencies. The frequencies that would be reinforced would be the ones that would resonate due to the dimensions of the case. That is, the length, and the diameter.
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