This is a level 4 measurement strand activity from the Figure It Out series. It also has an achievement objective from the Level 5 Number strategies and knowledge substrand.
A PDF of the student activity is included.
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solve problems involving time
solve problems inovle time rates
FIO, Level 4+, Measurement, Book Two, Hot Pots, pages 22 -23
computer (optional)
This activity has a lot of information for the students to read and absorb before they can enter it in a roster.
They will learn most if you leave them to sort the details out for themselves, but you may need to help any who have trouble with reading.
The students should start by entering the times and activities from the bullet-point list and then add the student and adult rosters. They need to be able to move between 12 and 24 hour time and to convert minutes into hours. A complicating factor is that the lines on the chart won"t all represent equal time intervals.
This activity relates to the rate at which fuel is fed into a kiln. Question 1 is best done as a spreadsheet so that the data can be used to make the graph required for question 3. Three columns are required:
If the students are using a computer to create the graph, they should choose the (XY) scatter graph option.
The number of stakes fed into the fire (question 2) never gets below 2 because of the rounding up. 60 percent of 2 is 1.2, but 1.2 rounded up becomes 2. Questions 4 and 5 ask the students to interpret their graphs. The steeper the slope is, the faster the rate at which the stakes are burnt.
This activity could form part of an art or technology unit on pottery.
Art
Technology
Activity one
The roster could look like this:
Activity Two
1.
2. 2 stakes; because we are taking 60% of 2, then rounding the result, which takes the number back up to 2 each time.
4. Between 1800 and 1900 hours
5. a. When the rate is greatest, the graph is steepest.
b. When the rate is least, the graph is most nearly horizontal.
Printed from https://nzmaths.co.nz/resource/hot-pots at 8:01pm on the 13th May 2024