Sequencing – B
In this lesson, students will arrange objects in a logical order with increased complexity.
Rationale (Why we are doing this?)
Ordering and order processes are an important foundation to algorithmic thinking.
- 3 film canisters filled with different amounts of rice (or similar filler)
- Balance scale
Context and Background Knowledge
Students should be proficient in comparing objects and sorting them based on a single attribute
Curricular Connections (Competencies and Content)
|Use multiple strategies to engage in problem solving (Math – Gr. 2)|
|Use technology appropriately to explore mathematics, solve problems, record, communicate, and represent thinking (Math – Gr. 2)|
Explore + Understand + Create (Key elements/Lesson Design/Format)
- In pairs or individually, students use a balance scale to compare the weight of 2 (of 10 total) film canisters
- The film canisters are repeatedly compared and placed from heaviest to lightest, adjustments being made as new discoveries are made
- Students are encouraged to explain their reasoning/placements with their peer/teacher
View YouTube link for a more complex version of this lesson in action:
- This activity would likely be carried out as a “station,” in pairs or individually, depending on how many sets of canisters/balance scales are available
- Students can be challenged to order the canisters using the least amount of comparisons possible
Please be aware of safety elements when doing this. There is potential for a rocket to hit someone’s face. Rockets can generate force and the observing from a safe distance is important. Students and staff that are launching were wearing hockey masks. Consider using safety glasses as an alternative and have the class observe from a safe distance (20 meters) that allows mass and velocity to be reduced.