It's a magic mishmash
This is a level 2 number 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:
- Skip count in hundreds.
- Skip count in twos.
It's a magic mishmash
Achievement objectives
NA2-2: Know forward and backward counting sequences with whole numbers to at least 1000.
Required materials
- a classmate
- Figure it out, Level 2, Number, Book 2, "It's a magic mishmash", page 18
See Materials that come with this resource to download:
- It's a magic mishmash activity (.pdf)
- It's a magic mishmash thousands book (.pdf)
Activity
This knowledge-based activity is designed to help students to recognise the skip-counting patterns in a range of numbers and apply the rule to their own set of numbers.
Prior knowledge and experience with skip-counting is necessary. For number sequences beyond 100, use a thousands book (Material Master 4-7) to show the effect of skip-counting in increments of 100.
As an extension, ask the students to make up their own magic number machine and write the rules for what will happen in each tube as the numbers pass through. See whether their classmate can guess what the rules are. Encourage the students to record their thinking and the number sequence to help them identify a pattern.
As another extension, you could give the students this problem:
Irwin and Xanthe found some other magic number machines. They put 248 into each machine. Here are the first three numbers that came out of each machine:
- Machine 1: 298 348 398 (skip-counting in 50s)
- Machine 2: 238 228 218 (subtracting 10 each time)
- Machine 3: 448 648 848 (skip-counting in 200s)
What is each machine doing to the number?
1.
Skip-counting in 100s or adding 100 to the previous number.
2.
a. 113, 213, 313
b. 127, 227, 327
c. 145, 245, 345
3.
Skip-counting in 2s or adding 2 to the previous number.
4.
a. 214, 216, 218, 220, 222
b. 443, 445, 447, 449, 451
c. 704, 706, 708, 710, 712
d. 599, 601, 603, 605, 607
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