stacking and nesting blocks

Kids First Math: Stacking Block Abacus Math Kit with Activity Cards by Thames & Kosmos

Constructive Playthings Stacking Blocks with Photo Pockets – 4-Piece Soft Foam Learning Toy Set for Kids

Manhattan Toy Brilliant Bear Magnetic Stack-up

Kaplan Early Learning Buttons & Spools Lacing Set

Learning Resource Rainbow Link 'n' Learn Links - 1000 Pieces, Toddler Learning Toys Ages 4+

ECR4Kids SoftZone Builder Stacking Blocks and Shapes, Beginner Playset, 16-Piece

Kaplan Early Learning Jumbo Double Octagon Builders - 36 Pcs

Junior Learning: 30 Mathcubes Sorting and Patterns Activity Set, Ages 4+

Hape Play Essentials: Monster Building Block - Buddies

Kaplan Early Learning Toddler Shape Sorter

Etokfoks 20pcs Wooden Number Building Blocks Montessori Math Stacking Toys for Kids Ages 3-8 Counting Games Color Sorting STEM Set

Mathcubes: Bead Strings 30 Activity Set

Discovery Stackers - Rainbow Arch Kids Stacking and Color Play, Fine Motor Skills Development Toy

Plantoys| Chicken Nesting

Kaplan Early Learning Textured Puzzle Blocks - 36 Pieces

Discovery Stackers - Rainbow Tall Arch Kids Stacking and Color Play, Fine Motor Skills Development Toy

Roylco® Light Learning Rocks

Kaplan Early Learning Discovery Stackers - Natural Tall Arch - 5 Pieces

Discovery Stackers - Rainbow House Kids Stacking and Color Play, Fine Motor Skills Development Toy

TickiT® Wooden Building Gem Blocks

Mathcubes: Angles 30 Activity Set

Plantoys| Stacking Rocket

Plantoys| Stacking Ring

Joyn Toys Transparent Light and Color Blocks - 108 Pieces