[size=150]Explore on your own various numbers and check your understanding of how to do approximations using significant figures.[/size]

[size=150]1. Click the [color=#0000ff][b]blue[/b][/color] or [color=#ff0000][b]red[/b][/color] round up or round down points on the vertical number line to find the values rounded up or rounded down.[br][br][/size][size=150]2. From the [b][color=#ff0000]red drop down list[/color][/b] with the current "[color=#ff0000][b]1 significant figure[/b][/color]" select "3 significant figure" and repeat step 1.[br][br][/size][size=150]3. Input a different decimal number or whole number to try again.[br][/size]

This is a resource adapted from [url=https://www.geogebra.org/u/alexchik]Mr Alex Chik[/url][br]GeoGebra 互動數學教室 [url=http://www.geogebra.hk/]http://www.geogebra.hk[/url]