Osmiroid wieghted numbers.
Contributors: Osmiroid Educational.
Publisher: Osmiroid Educational
Published: 1975
Place of publication: Gosport, Hampshire
Language: eng
Number of pages: 20
Subjects: Arithmetic -- Study and teaching (Primary); Mathematics -- Study and teaching (Primary); Number concept -- Study and teaching (Primary)
Notes: Set consists of twelve weighted numbers and 20 interlocking 5 g. cubes. Using any simple pair of scales, children can use these weighted numbers for counting values, additions, subtractions etc.