Lesson 11 Setters and solvers

Lesson plan

Piagetian Level Learners Thinking and abstract of the activity  
Solution by inversion of expression
3A
Early
Formal
Reflection at one level of abstraction on properties of numbers and their representation
Solution by trial and comparison with calculator
2B*
Concrete
Generalisation
Solutions to problems found, with reason






Solutions to problems found






Problems of different kinds created
‘Find the missing digits and explain your steps:

  • 8? x ?6 = 2158
  • ?7 x 4? = 1188
    Solution to problem found, with reason
  • ‘using only digits 3, 5, 8 and 9: set up problems’
    2B
    Mature
    concrete
    Solution to problem found.
    Middle
    concrete
    Episode 1
    When missing digits
    can be found
    and when they cannot
    Episode 2
    Setting and solving
    problems with
    missing digits
    Episode 3
    Further questions on missing digits

    License

    Thinking Mathematics Lessons Copyright © by Michael Shayer and Mundher Adhami. All Rights Reserved.

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