A) Introduction to teens with beads.
Material
- Teen boards and cards
- Nine ’10’ golden bead bars
- Short bead stair (colored bead bars).
Direct aim
To connect quantity, name and symbol.
Age of great interest
41/2+years.
Presentation
Using the ten golden bead bars and the colored bead bars, the teens are presented with a 3-period lesson starting with 11, 12 and 13.
First Period Lesson:
Take a ‘ten’ bar and next to it place the colored ‘one’ unit: ’10 + 1 makes eleven’.
Place the colored ‘two’ bar the same way: ’10 + 2 makes twelve’ and so on, pointing out in sequence-eleven, twelve, thirteen.
Second Period Lesson
Mix up the beads and form the three numbers out of sequence. Ask the child “Where is the twelve?” “Which is the eleven?” “Show me the thirteen.” Also ask the child to make the number you ask for.
Third Period Lesson
Ask the child to make any of the numbers he likes and to name it.
When the child has learnt all the teen names, they are laid out in sequence and counted.
To show the construction of the numbers from 11 to 19 in concrete material.
Note: This material is generally given after the Decimal System, but some children prefer to work with the teens after work with the spindles, and counters and cards.
Age of great interest
4 + years.
B) Introduction to TEENS WITH BOARDS.
Material
- 2 boards, each divided into five compartments.
- In nine of the set compartments a large ’10’ is printed in black.
- A set of cards printed with figures 1 -9 which will slide into the boards covering the nought.
Presentation
The symbols are presented with a 3-period lesson. First of all, point out to the child that the noughts on the teen board are on the right in the units’ place and that the ‘one’ is in the ‘tens’ place.
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First Period Lesson
Isolate 1-3 in the cards. Slip ‘1’ in the first slot-say’10 plus one equals eleven’. ‘This is eleven’. Place ‘2’ in the next slot-’10 plus 2 equals twelve’. Place ‘3’ in the next slot-’10 plus 3 equals thirteen. Eleven, Twelve, Thirteen.’
Second Period Lesson
Put the three cards in, and ask which is thirteen, eleven, twelve, Muddle them. Also ask the child to form the numbers you ask for.
Third Period Lesson
Ask the child to form any of the numbers and say what it is. He will generally do this in sequence. If he continues to do so, form the numbers out of order and ask the child what they are.
Direct aim
To connect the name and the symbol.
Age of great interest
4+years.
C) Introduction to teens (quantity and symbol): Teens with boards and beads.
Presentation
The beads are laid out on the child’s left-the teen board in the center and the cards on the right.
A golden ten bar is placed opposite each section of the teen board. The colored ‘one unit’ is placed beside the first bar “What is this?” – “Eleven”. ‘Now here we put the card “one” in the units’ place on the board. This is eleven.’ The colored ‘two’ is placed in the correct position. When this has been completed, in sequence, and repeated a couple of times, ask the child to make e.g.: 14 with the beads and the cards. When he is very sure of all the numbers with the quantity and symbol, he should lay the numbers out in sequence.
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