Standard Form and Orders of Magnitude (Teach This Topic)
This guide supports a home-educated learner aged 11 to 16 with standard form and orders of magnitude. Open Full Article...
number sense
Standard Form and Orders of Magnitude (Parent Q&A)
This guide explains the lesson’s key ideas about standard form and orders of magnitude. Open Full Article...
Standard Form and Orders of Magnitude
The numbers 7,200,000,000 and 0.0000000072 contain almost the same significant digits but represent vastly different scales. Open Full Article...
Efficient Mental Calculation Strategies (Parent Q&A)
This guide explains how the lesson develops flexible and accurate mental calculation. Open Full Article...
Efficient Mental Calculation Strategies (Teach This Topic)
This guide supports teaching mental calculation as flexible reasoning rather than a race for answers. Open Full Article...
Efficient Mental Calculation Strategies
Two different-looking calculations, 299 + 458 and 300 + 458 − 1, both equal 757. Open Full Article...
Place Value in Very Large and Very Small Numbers (Parent Q&A)
This guide explains how place value gives meaning to digits in whole numbers and decimals, including numbers that are extremely large or very small. Open Full Article...
Place Value in Very Large and Very Small Numbers (Teach This Topic)
This guide supports home teaching about place value, powers of ten and standard form for learners aged 11 to 16. Open Full Article...
Place Value in Very Large and Very Small Numbers
Place value explains how a digit gains meaning from its position in a number. The same digit can represent a very large amount or a tiny fraction of one. Open Full Article...