Base 10 assortment

Different kinds of blank wooden base 10 material. Use the units, longs, flats and cube to materialise the decimal numerical structure. For example the number 132. This number consists of 1 hundred, 3 tens and 2 ones. Support this fact by placing 1 flat, 3 longs and 2 units. Clarify, by using the blocks, the principle of conversion of hundreds and tens: 1 flat is equal to 10 longs and 1 long is equal to 10 units. Contents: wooden box (32 x 21.5 x 3.5 cm) 100 blank wooden units of 1 cm3 20 blank wooden longs of 10 cm3 2 blank wooden flats of 100 cm3