Definitions:
- pictograph
- data
- bar graph
- category
- dot plot
- spreads
- minimum
- maximum
- intervals
- range
- statistics
The investigation was good, although the dot plot took more time than I thought it would. There is a sample dot plot in the teaching materials that could be used instead. Some students had difficulty finding their pulse, although I found it helpful to tell them to find it and then keep their hands there until I said “Start” when it was time to begin counting.
The students had difficulty with question 5c which had them tell what would happen if we didn’t take our pulse rates for 15 seconds but instead took them for 60 seconds. More time talking about this is needed when having them multiply their number of pulses by four so that it is more understandable. Perhaps it would be beneficial to have half of the class count pulses for 15 seconds and the other half for a whole minute so that the differences show up on the dot plots.
The investigation took so long that I only gave questions 1 – 4 for homework on the first day. The second day we did 5, 6, 9, 10, 11 once we finished going over the homework. I also gave the students a practice quiz for section 1.1.
Pictographs (shown below) (Right click – “View Image” to see them in all their glory)
