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Help a girl to throw her ball through a hoop. Build two fractions to make a total of one whole. Complete the denominator of a fraction (at least one fraction may have a fixed numerator). For example, work out how many tenths can be added to three-fifths to total one whole. Look at fraction bars and a number line to compare the two fractions and their total. This learning object is one in a series of seven objects.

Weblinks to numerous sites about natural disasters

Balance scales by using blobs. Explore how many black blobs and white blobs balance each other. Discover the rule that balances the scales with the correct number and type of blobs. For example, 2 black blobs balances 1 white blob. Find out how many black blobs balance 2 white blobs. Build a number pattern. Then use the rule to solve a problem by moving blobs to make the scales balance. Go on to balancing scales with black, white and grey blobs. This learning object is a combination of three objects in the same series. Students identify that one item can be used to represent a value of more than one. Students predict the numerical relationship (ratio) between two or three types of items. Students analyse number sentences and record the equivalent relations.

Place Value Puzzler. Quick and simple place value warm up activities