Dyma lyfr stori i blant 3-5 oed am y cymeriad Alun Un. Mae'n canolbwyntio ar y rhif un, ac yn gymorth i hybu adnabyddiaeth plant o rifolion penodol mewn ffordd hwyliog a chyffrous.
Here is a story book about Alun Un for children between 3-5 years old. The book introduces the number one, and focuses on helping children to recognise numerals by using fun and exciting methods.
