**HUNDRED BOARD USING GUITAR PICKS**

**AREA:**

General: Mathematics

Specific: Linear Counting

**MATERIALS:**

- Silver, magnetic board
- 100 guitar picks (blue and purple)
- Basket
- 100 numeral chart

**PREPARATION:**

- Invite the child to do the exercise by saying,
**“I would like to give you a lesson in the math area. Do you know where the math area is located? I want to give you a lesson on the hundred board.”** - Indicate where it is located in the environment.
- Name the material.
- Show the child how to carry the silver, magnetic board, basket and 100 numeral chart in the acceptable manner to a rug.
- Seat the child on your subdominant side.

**PRESENTATION:**

- Bring the silver, magnetic dry board, basket containing guitar picks (blue and purple), and 100 numeral chart to a large rug.
- Place the silver, magnetic board on the lower middle of the rug.
- Place the basket containing guitar picks in the lower right hand corner of the rug (to the right of the silver, magnetic board).
- Place the 100 numeral chart in the upper right hand corner of the rug.
- Say to student,
**“Remember when we did the ten boards and numerals to 99 with the beads and board? Now we are going to work with just the numerals to 100.”** - Look in the basket for the purple colored guitar picks. These are the numerals for the multiple of ten (10, 20, 30, 40, 50, 60, 70, 80, 90, and 100).
- Place these purple guitar picks in a row across the top of the rug.
- Take one guitar pick (blue) from the basket and place it under the correct multiple of ten purple guitar pick. Here, the guitar pick with the same number of tens. The purple guitar pick for 100 goes to the right of the 90 guitar pick and the guitar pick for the numerals less than 10 go in a column to the left of 10.
- Continue with the blue guitar picks by taking them out one at a time and placing them in the correct column until all of the guitar picks have been placed.
- Begin to place the guitar picks on the silver, magnetic board, beginning with numeral 1 (blue) in the upper left-hand corner. Say to the child,
**“What numeral comes next?”**Then, ask the child to find that numeral and place it on the silver, magnetic board. - After all of the guitar picks (numerals) have been placed in rows (1-10), (11-20), (21-30), (31-40), (41-50), (51-60), (61-70), (71-80), (81-90), and (91-100), say to the child,
**“Now we are going to read our work. Can you read the work to me?”** - Beginning with the 1 (blue) and the multiples of ten (purple) return the guitar picks to the basket. The remaining guitar picks may be placed in random order into the basket.
- Return the silver, magnetic board, basket and 100 numeral chart back to the shelf.

**CONTROL OF ERROR:**

- Seeing the baseball themed picture cards out of order
- In the directress
- In the child’s familiarity with events in his/her own life

**POINTS OF INTEREST:**

- The silver, magnetic dry erase board
- The colorful guitar picks
- The sound of the magnet onto the silver, magnetic board
- Working with numerals 1-100

**PURPOSE/AIMS:**

Direct Aim:

- Development of sequential order in thinking (logical thinking)
- Vocabulary enrichment
- To further develop the mathematical mind
- To develop the concept of concrete and abstract

Indirect Aim:

- Creative thinking
- Oral expression
- Recognize the order of the numerals
- Multiplication preparation
- Counting

**POINTS OF EMPHASIS:**

- Taking out of the basket multiples of ten
- Placing the purple guitar picks (multiples of ten) at the end of each row on the silver, magnetic dry erase board (as you get to each of them)

**LANGUAGE:**

The guitar picks (blue and purple), the silver, magnetic dry erase board, and the numerals 1 through 100

**POINTS OF INTEREST:**

- Working with the numerals 1-100

**POINTS OF CONSCIOUSNESS:**

- Placing the purple guitar picks (multiples of ten) at the beginning of each column
- Placing the purple guitar picks (multiples of ten) at the end of each row on the silver, magnetic dry erase board

**CONTROL OF ERROR:**

- The directress
- The readiness of the child

**EXTENSIONS:**

Skip Counting: Have the child color the numeral chart to reinforce different lessons. For example, have them select a color and color all the squares that are multiples of two the same color. Repeat for number patterns for counting by fives and tens by selecting a different color. The chart becomes a great visual for skip counting by 2’s, 5’s, and 10’s. NOTE: Have several copies of the numeral chart available with colored pencils.

Multiplication Tables: Have the child color code the numeral chart for math factors and multiplication tables. The directress may print a different chart out for each number set, or work off of one chart. For example, color all multiples of three the same color. Ask the child if they see a pattern. Then, color all multiples of four a different color from multiples of three. NOTE: Have several copies of the numeral chart available with colored pencils.

**PREPARATION OF HUNDRED BOARD:**

The Ten Boards

**AGE: **4 and up

*At Home Montessori featured on pages 37-41. Enjoy!*

http://livingmontessorinow.com/wp-content/uploads/2011/12/Mom-Bloggers-Talk-Montessori-eBook.pdf