This lesson is the initial language construction segment of an integrated activity focused around using measurement and math tools to create functional designs. The present activity is to represent how a soda machine works. This what is called “A Black Box”- something that you must Infer logically how it works, because you really can’t see inside directly.
1. Observations- I have tried taking whole classes out and either purchasing a soda from machine while they record observations. (fun but a hassle). Now, with several students, we record the purchase of a soda/juice several times..... it's nice and quiet, so the inner workings can be heard. (link to video clip)
Homework Option- Students observe a soda machine (not neccessarily to buy one) and recall what is observable..... recording those observations and any questions in journal.
2. Introduction to Activity: In 10 minute discussion, we uniformly arrive at a few basic observations, which eventually we record in a data table format, so that the progression from Observation >Inference> Question>Solution might be established.
(see sample grid for entries)
For remainder of class (20 minutes =/-) students begin their initial thinking for solutions, working alone and together, with teacher moving around the class rather quickly to assess needs and assist.
1. Needs right American money= Recognizes money=How does it recognize? Solution is________
2. Selects soda by button=a connection=how is button connected to actual sodas? Solution is________
3. delivers soda (we hear it)=has a system for delivery=how is it constructed? Solution is________
4. makes change= recognizes and evaluates money= how does it make change? Solution is________
5. soda is cold= some kind of cooling system= how does it "refrigerate"? Solution is________
