About This Lesson
One of a set of three TESiboard Marble activities based on Ratio and Proportion. This activity, nominally the second in the set, requires the user to check that the quantity in the box matches the requirements. If correct, then it can be passed... but if not, the ratio needs correcting by dragging marbles to and from the conveyor belt. The expert level requires the ratio to be applied up to larger numbers of marbles. The complete TESiboard set includes Marble Packing, Marble Checking and Marble Labelling which links ratio and proportion to fractions.
