I would like to share my teaching package for Question sentences including だれ、いつ、どこ、どう、なに、なんじ、なんにん、なんさい、いくら、どのくらい、なぜ、どちら。I have used this materials for my students from prep to year 6, It WORKS.
I believe those words above are foundation for Japanese conversations and it is important for students to have confidence on those words.
This video would be useful for scaffolding. Students can learn those 12 words without English translation. That is a natural way to acquire second language.
And children today are "the generation of videos" getting a lot of information through videos including DVDs, TV, games, apps, etc. So this video materials are suitable for those generations.
In addition, each animation contains some funny part, which attracts more attention from kids.
I have also made alonger version but this short version is good for teachers who would like to use this materials for a short time.