2.2 Indeterminacy: moving from specific unknowns to variables
When learners are introduced to symbolic representations, they often represent a quantity that has a specific but unknown value. The learner may be asked to find this value.
Two examples of such problems are missing number problems and Think of a Number (THOAN) problems.
Activity 7 Missing number problems
Have a go at the following problems.
Activity 8 Reflecting
What makes these algebra problems, rather than simply number problems?
What do you expect learners to learn from these problems?
Now watch the two videos that discuss these questions.