I purchased this for my second grader who is having a little trouble learning math facts and concepts. Until we were unexpectedly homeschooling, I wasn’t fully aware of her struggles and wondered if Kontu was too simple to help her. I’m so glad I ordered the large kit! Kontu is the PERFECT visual and manipulative to help with understanding part/whole and learning math facts with better speed. I’ve quickly seen her understanding and enjoying math more now that we have visuals that interest her and make good sense of quantities. Memorizing just wasn’t cutting it! The little Magnetized biscuits are also just fun to fidget and play with. Thank you Kontu! Highly recommend this product.