S.H.
My kids are avid drawers and have been since toddlerhood.
They are now 5 & 9 years old.
SOME of what we have is:
-tons of paper to draw on. It does not have to be fancy "artist" paper
- Crayons
- colored pencils
- oil pastels
- charcoal
- pencils
- chalk
- Acrylic paints
- drawing books of all kinds even if not age related
- stencils
- an art box from the art store
- Plastic bins to keep it all in
- and they also use my art supplies. I have a Fine Arts Bachelor's so I have tons of art supplies laying around. I let my kids, use them. Regardless of age.
- Books with blank pages in them, so it serves as a sketch book, for my kids and it keeps all their drawings together, IN a "book." And I have them date each drawing they make. They can carry this around and draw anytime wherever they are.
- A pencil box, portable. That they can take anywhere with them.
- Erasers
- Kneaded erasers
- a wooden human mannequin.
The Dover books are fine.
There are also many others. Even "doodling" books, like from Barnes & Noble.
Also, just sign her up for classes.
And, I would encourage her to use other mediums, besides just Crayons.
She is not too young.
But ALSO, try to let her draw and express herself in her own "style." And to get used to other mediums and experiment with it. Besides just with Crayons.
AND teach her, there is no "right" or "wrong" way, to draw.
Sure in art classes they teach you "technique"... but "style" is not something born of "technique" but an adjunct to it.
Some people in other words, can draw without knowing any "technique" and they are very good. BUT, the basic concepts of drawing/coloring/proportions/perspective drawing, will come in time.
For now, just let her draw.
My kids, learn by drawing as well from their books and what I guide them on. Then I let them at it. And they have their OWN interpretation of it.
And, don't get locked into the idea that drawing is only done one way. Per "technique." Because, this can actually inhibit a child/adult, from drawing freely.
I had an Art Professor (that is very well known himself)... that, actually told me "Susan, I wouldn't recommend you take formal art classes, because it will denude you of your own unique style.... and limit you." He believed, that some people, if they get too hung up on technique and their art being "perfect"... that it will actually regress their art ability and "natural" style.