Number Rods: Difference between revisions

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| Level        = [[Primary]]
| Level        = [[Primary]]
| Age          = 3 - 4
| Age          = 3 - 4
| Preqs        = [[Long Rods]] <br> [[Pink Tower]] <br> [[Broad Stair]]
| Preqs        = [[Long Rods]]
| Materials    = set of Number Rods
| Materials    = set of Number Rods
}}
}}
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== Presentations ==
== Presentations ==
=== First Presentation ===
=== First Presentation ===
# step one
# Starting with the shortest rod, carry the rods one at a time to a mat.  Lay them all out parallel to each other but in random order as shown.
#:[[Image:Number Rods 1.JPG|200 px|center]]
#:[[Image:Number Rods 1.JPG|280px]]
# step two
# Put them in order the same way as was done with the [[Long Rods]].
#:[[Image:Number Rods 2.JPG|200 px|center]]
#:[[Image:Number Rods 2.JPG|280px]]
# step three
# Isolate the 1 rod and place a hand on it saying: "One."
#:[[Image:Number Rods 3.JPG|200 px|center]]
#:[[Image:Number Rods 3.JPG|280px]]
# step four
# Isolate the 2 rod and count each section: "One, two." Then name the rod: "Two."
#:[[Image:Number Rods 4.JPG|200 px|center]]  
#:[[Image:Number Rods 4.JPG|280px]]
# Do the same with the 3 rod.  Then do a three period lesson with the first three rods.


=== Subsequent Presentations ===
=== Subsequent Presentations ===
# step one
# In later lessons, introduce the other rods in the same way.
# step two, etc.


== Points of Interest ==
== Points of Interest ==
Instruct the child to build the stair (as they did with the red rods), keeping the red end
of each rod to the left side of the mat (POI).


== Control of Error ==
==Control of Error==
*visual - pattern of colored sections
*internal – sense of length acquired through work with red rods
*internal – sense of sequence of numbers acquired through auditory memory.


== Variations and Extensions ==
== Variations and Extensions ==  
* Once all are lined up onto rug, slide smallest rod up ‘stair’, demonstrating its size is equal to the difference between each rod next to the other.


== Material ==
== Material ==
This material consists of ten wooden rods, painted alternating red and blue. The shortest rod is 10cm in length, they each increase in length by 10cm up to the longest which is 100cm long. The ends of the rods are 2.5cm square.
===Make Your Own===
[[Category:Make_your_own]]
The Number Rods can be made by cutting 1" x 1" boards to the correct length, taping them off, and then painting them.<br>
[[File:Num Rods AHC 1.jpg|270px]] [[File:Num Rods AHC 2.jpg|270px]] [[File:Num Rods AHC 3.jpg|270px]]<br>
(A more detailed description of how this was done can be found at [http://ahandmadechildhood.blogspot.com/2009/11/how-to-make-montessori-number-rods.html A Handmade Childhood].)
===Where to Buy===
<div style="float: left; width: 40%">
[http://adenamontessori.us/details.php?did=34 Adena] $32.07<br>
[http://www.affordmontessori.com/product_details.asp?productcode=%27MA01A%27 Affordable Montessori] $59.00 (regular)<br>
[http://www.affordmontessori.com/product_details.asp?productcode=%27MA01P%27 Affordable Montessori] $99.00 (premium)<br>
[http://www.montessoriresources.com/Number-Rods-P471C7.aspx Albanesi] $315.00<br>
[http://www.alisonsmontessori.com/Blue_and_Red_Number_Rods_p/m01.htm Alison's] $50.00 (with number cards)<br>
[http://www.bruinsmontessori.com/itemdetails.php?item_id=42 Bruins] $140.00<br>
[http://www.cabdevmontessori.com/product.php?productid=16711&cat=253&page=1 Cabdev] $154.00<br>
[http://www.calibermontessori.com/catalog/item/3528880/3218639.htm Caliber] $32.99<br>
[http://www.montessoribuy.com/cartdetails.asp?id=HTM0190 Creative Learning] $39.95<br>
[http://www.montessorimaterials.com/content/number-rods E & O] $180.00<br>
[http://www.grandpas.ca/product_info.php/cPath/5/products_id/150?osCsid=83c822997e144b01a8146bf83ec2873e Grandpas] $45.00<br>
[http://shop.hellowood.com/Red-Blue-Rods-M7.htm Hello Wood] $181.00 (red and blue)<br>
[http://shop.hellowood.com/Red-Natural-Rods-M71.htm Hello Wood] $166.00 (red and unpainted wood)<br>
[http://www.julianagroup.com/mathematics.lasso?page=detail&Category=&SubCategory=Mathematics&NewItem=&Overstock=&Description=&skip=0 Juliana] $289.80<br>
[http://www.kidadvance.com/Store/ProductDetails.asp?pid=277&catid=4 Kid Advance] $39.99<br>
[http://www.montessoriconcepts.com/products.php?cat=Math&num=3 Montessori Concepts] $36.00<br>
[http://www.montessoriland.com/site/1270021/product/ID_%202006 Montessori Land] $50.00<br>
[http://www.montessorioutlet.com/cgi-bin/item/510500010/5105/Montessori%2DOutlet%2DNumerical%2DRods%2D Montessori Outlet] $42.95<br>
[http://www.nienhuis.com/number-rods-1-2.html Nienhuis] $185.50<br>
[https://www.thinkamajigs.com/number-rods/ Thinkamajigs] $64.95<br>
[https://merocomontessori.com/montessori-math-materials/21-small-numerical-rods.html Meroco Montessori] $25 (Small Numerical Rods) <br>
</div><div style="float: left; width: 30%">
'''Stand'''<br>
[http://adenamontessori.us/details.php?did=35 Adena] $18.66<br>
[http://www.affordmontessori.com/product_details.asp?productcode=%27MA01B%27 Affordable Montessori] $39.00<br>
[http://www.alisonsmontessori.com/Stand_for_Red_Rods_and_Number_Rods_p/f03.htm Alison's] $28.00<br>
[http://www.alisonsmontessori.com/Stand_for_Red_Rods_and_Number_Rods_Premium_Qualit_p/pf07.htm Alison's] $50.00 (premium)<br>
[http://www.cabdevmontessori.com/product.php?productid=16977&cat=253&page=1 Cabdev] $40.00<br>
[http://www.montessoribuy.com/cartdetails.asp?id=HTM0191 Creative Learning] $22.95<br>
[http://www.kidadvance.com/Store/ProductDetails.asp?Pid=85 Kid Advance] $24.99<br>
[http://www.montessoriland.com/site/1270021/product/ID_%208001 Montessori Land] $37.00<br>
[https://www.thinkamajigs.com/rods-rack/ Thinkamajigs] $36.95<br>
</div>
<div style="clear:both"></div>
'''Small Number Rods for Table-top'''<br>
[https://bestmontessoritoys.com/montessori-mathematics/12-lock-box-exercises-with-colour-doors.html Best Montessori Toys] $23.40<br>
== Further Reading ==
*[[Teaching Montessori in the Home: The Pre-School Years]] by Elizabeth G. Hainstock, pages 80-81, 110-111

Revision as of 19:58, 18 July 2018

Number Rods
Math - Numbers 0-10
Number Rods 2.JPG
LevelPrimary
Age3 - 4
PrerequisitesLong Rods
Materialsset of Number Rods

Also called the Red and Blue Rods.
This activity teaches the child the concept of quantities 1 - 10 and their names.

Presentations

First Presentation

  1. Starting with the shortest rod, carry the rods one at a time to a mat. Lay them all out parallel to each other but in random order as shown.
    Number Rods 1.JPG
  2. Put them in order the same way as was done with the Long Rods.
    Number Rods 2.JPG
  3. Isolate the 1 rod and place a hand on it saying: "One."
    Number Rods 3.JPG
  4. Isolate the 2 rod and count each section: "One, two." Then name the rod: "Two."
    Number Rods 4.JPG
  5. Do the same with the 3 rod. Then do a three period lesson with the first three rods.

Subsequent Presentations

  1. In later lessons, introduce the other rods in the same way.

Points of Interest

Instruct the child to build the stair (as they did with the red rods), keeping the red end of each rod to the left side of the mat (POI).

Control of Error

  • visual - pattern of colored sections
  • internal – sense of length acquired through work with red rods
  • internal – sense of sequence of numbers acquired through auditory memory.

Variations and Extensions

  • Once all are lined up onto rug, slide smallest rod up ‘stair’, demonstrating its size is equal to the difference between each rod next to the other.

Material

This material consists of ten wooden rods, painted alternating red and blue. The shortest rod is 10cm in length, they each increase in length by 10cm up to the longest which is 100cm long. The ends of the rods are 2.5cm square.

Make Your Own

The Number Rods can be made by cutting 1" x 1" boards to the correct length, taping them off, and then painting them.
Num Rods AHC 1.jpg Num Rods AHC 2.jpg Num Rods AHC 3.jpg
(A more detailed description of how this was done can be found at A Handmade Childhood.)

Where to Buy

Adena $32.07
Affordable Montessori $59.00 (regular)
Affordable Montessori $99.00 (premium)
Albanesi $315.00
Alison's $50.00 (with number cards)
Bruins $140.00
Cabdev $154.00
Caliber $32.99
Creative Learning $39.95
E & O $180.00
Grandpas $45.00
Hello Wood $181.00 (red and blue)
Hello Wood $166.00 (red and unpainted wood)
Juliana $289.80
Kid Advance $39.99
Montessori Concepts $36.00
Montessori Land $50.00
Montessori Outlet $42.95
Nienhuis $185.50
Thinkamajigs $64.95
Meroco Montessori $25 (Small Numerical Rods)


Stand
Adena $18.66
Affordable Montessori $39.00
Alison's $28.00
Alison's $50.00 (premium)
Cabdev $40.00
Creative Learning $22.95
Kid Advance $24.99
Montessori Land $37.00
Thinkamajigs $36.95

Small Number Rods for Table-top
Best Montessori Toys $23.40

Further Reading