29 07, 2017

## What is zero? Zero and place value

By |2017-07-29T17:35:52-07:00July 29th, 2017|Math|Comments Off on What is zero? Zero and place value

A math problem showing place value How can you add big numbers without an abacus? You still group the sheep (or whatever) just as you did when you were using the abacus, but [...]

29 07, 2017

A boy walking backwards Subtracting numbers is just the same as adding them, only walking the other way along the number line. To subtract 3 from 8, you start on the number [...]

29 07, 2017

## Simple operations – fun with math

By |2017-07-29T17:19:22-07:00July 29th, 2017|Math|Comments Off on Simple operations – fun with math

Walk along a chalk line The four basic things you do with numbers are addition, subtraction, multiplication, and division. Each of these is basically a way of describing how fast you are moving along [...]

29 07, 2017

## Commutative project – Chalk number line

By |2018-04-24T07:57:26-07:00July 29th, 2017|Math|Comments Off on Commutative project – Chalk number line

Walk along a chalk line To get to understand the number line better, mark out a line on the playground or on the sidewalk outside your house with chalk. At the middle of [...]

29 07, 2017