Kumon Hiragana is a book for Japanese kids between 4 and 6 years to learn hiragana. Since this is a book targeted to kids, it is a very didactic material with pictures and activities.
The book follows a methodology based in filling gaps with the hiragana letters to make words from pictures located on top of the page. At the end of the book these is a removable cardboard with the hiragana alphabet.
Even though this material is mainly for kids, it is also a good method for western students to learn hiragana and vocabulary at the same time.