Addition With Number Rods
From Montessori Album
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| Addition With Number Rods | |
|---|---|
| Math - Memory Work | |
 | |
| Level | Primary |
| Age | 4 - 5 |
| Prerequisites | Number Rods With Numerals |
| Materials | Number Rods numeral cards 1-10 2 "+" signs 2 "=" signs |
This activity introduces the child to simple addition facts.
Presentation
- Bring the material to the mat. Grade the rods.
- Place the 1 rod and the 2 rod end to end. Ask the child to find one rod that is as long as the two put together.
- Place the 3 rod below to compare. "This rod and this rod put together are the same as this rod."
- "Here's another way we can say it:" place the symbols as shown.
- Count the rods and place the appropriate number cards. "One plus two is the same as three."
- Scoot the number cards down and add the second set of symbols. "One plus two equals three."
Points of Interest
Purpose
Direct Purpose
- To show how we get larger numbers from smaller ones.
Indirect Purpose
- To show the limits of base 10.
- Inquiry into the concept of one half.
Control of Error
- The ten rod.
- The visual shape of the layout.
Variations and Extensions
Material
Where to Buy
Number Rods
Adena $32.07
Affordable Montessori $59.00 (regular)
Affordable Montessori $99.00 (premium)
Alison's $50.00 (with number cards)
Bruins $140.00
E & O $180.00
Hello Wood $181.00 (red and blue)
Hello Wood $166.00 (red and unpainted wood)
Kid Advance $39.99
Montessori Concepts $36.00
Montessori Outlet $42.95
Nienhuis $185.50
Thinkamajigs $64.95
Stand
Adena $18.66
Affordable Montessori $39.00
Alison's $28.00
Alison's $50.00 (premium)
Kid Advance $24.99
Thinkamajigs $36.95
