Many Montessori schools and Waldorf educators consider knitting as part of the 1st grade curriculum.
Before I took a class at a LYS, one of my friend’s child, Z, learned to knit at school. Craving to learn how, I suggested to Z that maybe she could teach me. In all seriousness, she told me I would need to learn to crochet before she could teach me to knit!
Point is, these schools regularly use tools like knitting and crochet to teach a variety of skills (fine motor, counting, patterns, etc.) to their 6 year olds, but they do tend to teach crochet before knitting.
And those Lion needles are too cute–notice one is red and one is blue. I think that would make things easier to explain. I won’t share my needles with my 4 and 2 year olds, but they each have their own yarn and needles (which are actually chopsticks). They stay in their own baskets, like my knitting basket.