My best friend tests his 5 year old basic math questions from store-bought material which is good for one time use (his son memorizes the answers) …. but he wants to give him more practice.

Ugochukwu Onumadu, Merci Iyelobu, Babatounde Yessoufou, Adedeji Adepeju, Sulaimon Adebayo, Oluwabusayo Omotosho Journal of Applied Mathematics and Physics Vol.14 No.1, January 29, 2026 DOI: ...