Interactive Textbook Covering Multiple Outcomes
Number Systems of the Past
Addition, Subtraction, Multiplication and Division
Doubling and Halving
Order of Operations: BODMAS
Make a Ten: PhET Simulation
Simulation Guide: make-a-ten-html-guide_en
- Place Value
Add numbers by making tens. Break apart and combine numbers while focusing on place value. Use the adding screen to add any two numbers. Use the game screen to apply your make-a-ten strategies!
Sample Learning Goals
- Improve understanding of place value by using different sizes of papers for ones, tens, and hundreds.
- Develop mental math strategies when taking apart and putting together numbers.
- Use the “make a ten” strategy when counting and doing addition.
- Develop a mental model of the basic properties of numbers including commutativity, associativity, and closure.
This activity aligns with learning outcomes for Year 7 Solomon Islands Mathematics Curriculum:
- 7.1.4 understand that our number system is “Base 10” and are made up of the following digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 (u)
- 220.127.116.11 write and express numbers in figures using digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, and also in words
- 7.1.5 understand that a position of individual digits in a number holds different values and names (u)
- 18.104.22.168 identify the names and values of numbers in respect to the positions of the digits in the Place Value Table
- 22.214.171.124 arrange numbers in ascending and descending order according to their values.
Permission is granted to freely use, share, or redistribute PhET sims under the CC-BY license.
Attribution: PhET Interactive Simulations
University of Colorado Boulder