Double Double Boil and Bubble
Teacher’s Notes

These exercises, activities and games are designed for students to use independently or in small groups to practise number properties. Some involve investigation and should be formally written up (LINK to investigation write-up sheet) and may become longer and more involved tasks with subsequent recording/reporting. Typically an exercise is a 10 to 15 minute activity.

Number Framework domain and stage:

Multiplication and Division. Early additive, advanced additive, advanced multiplicative

Curriculum reference:

Number, level 4

Numeracy Project book reference:

These exercises and activities follow from a teaching episode based on Book 6 page 25 and Book 6 page 40. Extra teaching episodes are described with the exercise notes below.

Materials:

Prior knowledge. Students should be able to:

During these activities students will meet:

Background:

Further information to back up what they will meet:

Comments on these exercises

In exercises 1,2,3 and 6 some attempt to structure the problems to encourage use of other answers, two more and two less, close to ten strategies. Doubling is a very powerful skill, and possibly the most important following counting, that students must aquire early. The first three exercises cover all numbers from 2 to 99.

Exercise 1
Teaching lessons preceeding this exercise could include:-

Exercise 2
Teaching lessons preceeding this exercise could include:-

Students are also learning how to halve when they learn how to double

Exercise 3
Teaching lessons preceeding this exercise could include:-

Exercise 4
Check students can use the dice to randomly generate two digit numbers.

Exercise 5
Check students can use the dice to randomly generate three digit numbers.

Exercise 6
Teaching lessons preceeding this exercise could include:-

Practice excercises with answers:

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