Base 10 set (multibase arithmetic blocks) – Jegro
The Jegro base ten set comprises of different kinds of blank wooden base ten material. Working with this mathematical material allows the child to materialise the decimal numerical structure by using the multibase arithmetic blocks which are represented in units, longs, flats and cubes. For example the number hundred thirty two: this number consists of one unit of hundred, three units of tens and two units of one. This fact is supported and visualized by placing one flat, three longs and two units. By using the blocks, the principle of conversion of hundreds and tens is clarified: one flat is equal to ten longs and one long is equal to ten units.
The Jegro base ten set can also be used by a teacher as demonstration material. For example, use the multibase arithmetic blocks to explain the exchange of numbers which can be demonstrated by exchanging the blank wooden cube for ten flats or one hundred units.
This material is suitable for primary school children aged 6-12 years.
1 wooden storage box (24 x 13 x 12 cm) with a lid
5 transparent plastic boxes containing respectively:
1 box with 100 blank wooden units of 1 cm3
2 boxes with 10 blank wooden longs of 10 cm3
2 boxes with blank wooden flats of 100 cm3
1 blank wooden cube of 1000 cm3