For example
The door of the classroom is a rectangle, taller than it is wide.
In Grade 1
Children count sides and square corners on real doors, books and mats before they meet the word on a worksheet.
Watch out for
Children often think a square is not a rectangle. A square has four straight sides and four square corners, so it counts as one.
Say it at home
Point at a door or a book and ask your child to count the four corners with a finger.
Try it together
See how your child is doing with this, in about ten minutes. No signup needed.
Try the free Skill Check