Bingo
A useful teaching tool with a great range of number activities at different levels. This site makes class Bingo activities manageable. Play bingo where students have to add or subtract, multiply, divide, round up or down, estimate, use co-ordinates, use place value or find remainders.
http://www.wmnet.org.uk/wmnet/custom/files_uploaded/uploaded_resources/848/auto_indx.htm
Estimate
A teaching tool for estimating whole numbers and decimals on a number line.
Pinpoint that number
Estimate numbers on a number line
http://www.channel4learning.net/sites/puzzlemaths/pinpoint.shtml
Glowla’s Estimation Contraption
Estimate the addition of more than two numbers using Glowla’s Estimation Contraption
http://pbskids.org/cyberchase/games/ballparkestimation/index.html
