Dazzler digs on
This is a level 3 algebra activity from the Figure It Out series. A PDF of the student activity is included.
About this resource
Figure It Out is a series of 80 books published between 1999 and 2009 to support teaching and learning in New Zealand classrooms.
This resource provides the teachers' notes and answers for one activity from the Figure It Out series. A printable PDF of the student activity can be downloaded from the materials that come with this resource.
Specific learning outcomes:
- Write number stories for multiplication and division problems.
Dazzler digs on
Achievement objectives
NA3-6: Record and interpret additive and simple multiplicative strategies, using words, diagrams, and symbols, with an understanding of equality.
Required materials
- counters or cubes
- Figure It Out, Level 2, Number, Book 1, "Dazzler digs on", page 19
See Materials that come with this resource to download:
- Dazzler digs on activity (.pdf)
Activity
Like "Emani’s haircutting" on page 18 of the students’ book, this activity involves finding fractions of a set. The difference is that the total number of the set decreases from question to question as fractions of the set are subtracted.
The students can use the cubes to model the problems. Encourage them to do as much as they can by using their mental strategies, supported by their recording. You may need to model the number stories for the students.
1.
7 x 3 = 21 bones or 3 + 3 + 3 + 3 + 3 + 3 + 3 = 21
2.
a. 21 ÷ 3 = 7 bones or one-third of 21 is 7
b. 21 – 7 = 14 bones
3.
a. 14 ÷ 2 = 7 bones or half of 14 is 7
b. 14 – 7 = 7 bones
4.
a. 1 each (7 ÷ 4 = 1 with 3 remainder)
b. 3 bones
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