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Home » Montessori » How Montessori Teaches Math – Ten Board Lesson

How Montessori Teaches Math – Ten Board Lesson

This post may contain affiliate links. See my disclosure .

Let’s take a detailed look into teaching math using the Montessori Ten Board.

The Ten Boards are found within Linear Counting and come after the Montessori Teens Board lesson in the Montessori Math sequence.

You can purchase a reasonably priced set on Amazon.

Montessori Ten Board Lesson

Learn how to teach using Montessori Ten Boards

Presentation I – Introduction to Quantity

Ten Board Lesson Collage

Ask the child:  “Do you remember what this is? Yes it is ten.” Slide the bar to the left of the mat.

Place 2 ten bars side by side in the middle: “What do we have here? Yes, two tens. Two tens are twenty. This is ten and this is twenty.” Slide the bars over near the ten bar leaving a slight space between them.

Lay 3 ten bars in front of you: “ten, twenty and thirty. Three tens make thirty.” Slight over to the right of twenty.

Review the names with a 3 period lesson.

Introduce the rest of the quantities in this manner decreasing repetition of the early quantities as the child retains them. Involve the child more and more: “What do you think we should get out next? Can you count that out?”

Play mix up and hiding games to reinforce and make the work fun.

Related Lesson: Learn Composition of Quantities Montessori Math Lesson

Presentation II – Introduction to Symbols with Ten Boards

ten_boards_10_20_30

Invite the child to learn the symbols for tens. Spread the mat and boards in the same manner as the teen boards.

Be seated on one side with the child seated on the other.

Point to ten: “Do you remember what this is? Yes, it is ten.”

Point to 20: “Do you remember what this is? Yes, it is 20. Can you say 20?”

Point to 30: “Do you remember what this is? Yes, it is 30. Can you say 30?”

Complete a three period lesson on each symbol.

Continue introducing symbols and reviewing old ones. Check the child’s knowledge of the symbols. No need to give a lesson if the child already knows the symbol.  Proceed to associate quantity when the child is ready.

Presentation III – Association of Quantity and Symbol

ten_boards_III

Invite child, spread out the mat and set out boards. Place bead bars at the upper left.

Ask the child to read the top numeral and to place a ten bar next to it. Continue placing quantities and reading quantities.

ten_boards_III_quantity

Try to have the child do most of the work. To reinforce, mix up the ten bars and have the child reorder.

Presentation IV – Counting to 99

Invite child to learn how to count to 99.

Spread mat, get materials and arrange as in previous presentations.

ten_boards_99_2

Put a ten bar to the left of the ten: “This is ten.”

Place the ten bar next to ten on the board.

ten_boards_99_11_12_13_19

Put one bead beside the ten bar: “This is eleven. Will you count with me?” Slide the numeral one over the zero: “This is how we write eleven.”

Place a second unit under the 1st: “This is twelve. Let’s count to twelve.”

Slide the numeral two over the zero: “This is how we write twelve.”

Place a third unit under the 2nd: “This is thirteen. Let’s count to thirteen.”

Slide the numeral three over the zero: “This is how we write thirteen.”

Continue adding units and changing symbol.

The child should take over at some point.

ten_boards_99_20

When you get to 19, ask the child what comes next: “Twenty comes next.”

Pick up the units and place them in their container. Place another ten bar to the right of the first ten bar, touching it: “This is twenty. This is how we write twenty.”

ten_boards_99_21_32

 Place a unit next to the right of the tens: “This is twenty-one.”

ten_boards_99

Continue in this manner up to 99. This may take a few days. Allow the child to take breaks.

Additional Resources

  • Ten and Teen Board Extension Sheets from Montessori Printshop
  • Montessori Teen & Ten Boards Set from Amazon


Tagged With: Shelf Work

About Marnie Craycroft

Marnie hails from Maine where she spent summers buried in sand and winters buried in snow. She is the daughter of a nearly four decade veteran of the public school systems. Teaching has always been a part of her life. She founded Carrots Are Orange in 2010.

Carrots Are Orange is a Montessori learning and living website for parents and teachers.

Marnie graduated from Wesleyan University in 1999 with a BA in Economics. She spent nearly a decade working in investment management. In 2006, she earned her MA in business from the University of Washington’s Foster School of Business.

Marnie moved to the west coast in 1999 and currently lives in Boulder with her husband and three sons. She is Montessori trained. Her work has been featured on Apartment Therapy, Buzzfeed, PBS Kids, BabyCenter, the Melissa & Doug blog, Huffington Post, and WhattoExpect.com. Besides writing, passions include running (usually after her three sons), photography, and outdoor adventures.

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