Measures and measuring /

gan Paling, D.

Numbers and number system /

gan Paling, D.

Working with numbers /

gan Paling, D.

Finding out about shapes /

gan Paling, D.

Relations and graphs /

gan Paling, D.

Operations with sets and numbers /

gan Paling, D.
Cyhoeddwyd 1968

Finding out about shapes /

gan Paling, D.
Cyhoeddwyd 1975

Teaching mathematics in primary school

gan Paling, D