How many sides does a triangle have? Three! Sort shapes that have three sides and shapes that don't have three sides with this wacky worksheet.

Kids will sort and classify toys in this categorizing worksheet. Help your child sort toys by type and uses in this toy categorization worksheet.

Clock, octopus, starfish, turtle: Which thing does not belong in this group? Kids completing this preschool worksheet identify the object that does not belong.

Apple, pear, key, banana: Which object does not belong in this group? Kids complete this preschool worksheet to identify the object that does not belong.

Circle, cheese, triangle, square: One of these things does not belong in this group. Help your child figure out the outlying object with this worksheet.

Does a crocodile or hot air balloon belong in the house? Challenge your little one to think logically to figure out what doesn't belong inside a house.

Your shoe-obsessed child will learn how to count and classify his shoes in this worksheet. Count and classify with your child using these exercises.

Categorize the objects by location in this cut-and-paste sorting worksheet!

Help your preschooler wrap her head around nighttime and daytime objects with this cute categorization worksheet.

Preschoolers are full of observations about the world around them. Get your child to apply what he knows by having him figure out what doesn't belong on a desk.

Count and classify animals by their habitats and abilities. Help your child work on sorting skills with this count and classify animals worksheet.

Count and classify different kinds of vehicles in this worksheet. Kids will identify what vehicles pictured have wheels, can float, or are green.

Count and classify your produce beyond fruits and vegetables. Try this fruits and vegetables worksheet to increase your child's sorting skills.