Ten Boards (Seguin B)

The Ten Boards introduce the decade names and show that each decade is a multiple of ten, building understanding of our base-10 number system.

• Framework: Montessori
• Unit: Mathematics
• Learning area: Linear Counting
• Level: Ages 4-6

Objectives

• Understand counting by tens
• Learn decade names and patterns
• Connect quantity to decade numerals
• Extend counting to 99

Materials

• Ten Boards (Seguin B): Two boards showing 10, 20, 30, 40, 50, 60, 70, 80, 90
• Number tiles 1-9
• 9 ten-bars from Golden Beads

Instructions

1. Place one ten-bar. 'This is ten.' 2. Add another. 'Ten and ten is twenty.' 3. Continue to ninety. 4. Practice decade names. 5. Slide unit digits to build any number. 6. '43 is four tens and three units.'

Educator tip

Connect decade names to their number of tens. 'Fifty has five tens.' Let children see the pattern.

Assessment

Child names decades, builds quantities, and creates any number 11-99.

More from Mathematics

• Hundred Board
• Golden Beads: Introduction
• Golden Beads: Building Large Numbers
• Addition with Golden Beads
• Subtraction with Golden Beads
• Stamp Game
• Multiplication: Bead Bars
• Introduction to Division