Which textbooks do you recommend for 6 year olds? I have a few Russian math circle ones and the UCLA one. But it’s kind of daunting because the material is not

Which textbooks do you recommend for 6 year olds? I have a few Russian math circle ones and the UCLA one. But it’s kind of daunting because the material is not sequenced into lesson plans. As a point of reference, reading curriculum is very easy to teach because there are scripts to follow in the lesson plans.