๐Ÿ–๏ธSandpaper ๐Ÿ”ข Numbers (Early Montessori Math)

In a Montessori Math curriculum, after introducing Numerical Rods (buy here) at around two years of age, Sandpaper Numbers (buy here) are generally introduced next, where a child visually sees the number; then traces it, feeling it sensorially with a touch; and finally, learns the name of the symbol of the number. Sandpaper numbers is a sort of a mixture between a sensorial and a math activity since the child learns the symbol/numeral which represents the number with different senses such as touch, sight, and hearing, while learning the name of a number.

The best way to present sandpaper numbers is using a 3๐Ÿ…ฟ๏ธ๐ŸŒ Three Period Lesson: (for a detailed 3๐Ÿ…ฟ๏ธ๐ŸŒ  Lesson presentation, see a post here). Start with three numbers at a time, for example presenting numbers one through three: 

In a Nutshell: (1P) This says ______.            (2P) Will you show me ______?         (3P) What is this? โ€จ 

  • (1st P) Choose a number and while tracing that number with an index and third finger say: โ€œThis says 1. Would you please trace 1?";  "This says 2." ... etc. (You would emphasize on "says vs. is" because the written number is merely a symbol representing that numeral and not the actual quantity.)
  • (2nd P)  โ€œWill you show me 1?... 2? ... 3?"
  • (3rd P) โ€œWhat is this?" 

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At 31 months, Adrian can complete the 3๐Ÿ…ฟ๏ธ๐ŸŒ  Lesson only with numbers one through three, showing and naming them correctly when asked even during the last Third Period: "What is this?" However, starting with a number four, he confuses to name the numbers correctly (the Third Period). 

p.s. An update: by 34 months, Adrian could correctly complete the entire 3๐Ÿ…ฟ๏ธ๐ŸŒ  Period Lesson with numbers 1-10 with wooden numbers puzzle (see a post here). And by 35 months, Adrian could complete3๐Ÿ…ฟ๏ธ๐ŸŒ  Period Lesson also with spindles (see a post here).

 
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I strongly believe that learning and play compliment each other, so we would play a game: while keeping the numbers visible, I would give simple and fun instructions: 
DSC_0226.JPG "Place number three on your head." 
DSC_0226.JPG"Turn number two upside down."
DSC_0226.JPG"Hide number one behind your back," and so forth ... 

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As an extension, offer a child to shade over the number with colorful crayons.

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See here a video-post "๐Ÿ–๏ธSandpaper ๐Ÿ”ข Numbers (Montessori ๐Ÿ”ข Math 101 ๐ŸŽฅ Series ๐ŸŽ‡ Curriculum)" which illustrates how you would you a 3 Period Lesson.

For more on Montessori Math Lessons, read here "Early Math" post, which explains briefly which Montessori materials are to be introduced first and in what order. Also, "Sandpaper Numbers Extension" post (read here ) offers different ideas on how to use marbles or crayons to keep sandpaper numbers interesting and captivating. 


DIY ๐Ÿ’‰ Blood Model (BODY Anatomy Unit Study, Science๐Ÿ”ฌโš—๏ธโš–๏ธ 101 ๐ŸŽฅ Series ๐ŸŽ‡)

We are continuing our BODY Anatomy unit study. Today, it is all about ๐Ÿ’‰blood! Recently, Adrian, after getting a scab, asked me: "What is blood made of?" ๐Ÿค”The cells and particles that make up our blood are so minuscule! So I wanted to break the blood down into its components, examine each, discuss its functionality and then see what will happen when the components mix together. With this easy DIY Blood model, we will explore up close what is in just one drop of blood! We will also learn what the white blood cells, red blood cells, and platelets really look like in comparison to one another.

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What you will need to make this ๐Ÿ’‰ blood model:

๐Ÿ”ด Cheerios with red food coloring to make red blood cells;
โšช๏ธ white marshmallows to resemble white blood cells; 
๐Ÿ’œ purple beads for platelets;
๐Ÿ’› water with yellow food coloring to make plasma.

DSC_0041First, offer a child to make blood "plasma" by adding yellow food coloring to the water. 

DSC_0041Once the plasma is ready, make "red blood cells" by adding red coloring to Cheerios.

DSC_0041Mix Cheerios and let them soak up the red food coloring. 

 DSC_0041Red blood cells are ready! 

Observe what will happen once all the blood ingredients are mixed together.

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Let your child explore the mixture and then discuss the parts of the blood and its functionality:

  • ๐Ÿ”ด Red blood cells carry oxygen.
  • โšช๏ธ White blood cells are our "soldiers" - they fight germs, bacteria, and viruses.
  • ๐Ÿ’œ Platelets facilitate clotting and help heal cuts.
  • ๐Ÿ’› Plasma helps the blood move through veins and arteries.

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Your ๐Ÿ’‰blood makes up 8% of your body weight. Did you know that there are 60,000 miles of blood vessels in your body, which is twice the circumference of our ๐ŸŒŽ planet Earth! Blood plays a very important role in your bodyโ€™s everyday functions, such as carrying life-potent oxygen and nutrients from your โค๏ธ๏ธheart to other parts of the body. Blood also maintains the optimal body temperature, keeping you warm or cool day and night.


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We are using First Human Body Encyclopedia (buy here) book as a reference. The book introduces inner workings of the human body with fascinating facts and full-color photos and illustrations, making anatomy accessible and fun for any age!


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Our body contains a lot of various systems and organs, each performing an important specific function. I hope that this simple ๐Ÿ’‰DIY โš—๏ธscience experiment will help your child better understand the amazing human BODY and how it works!

See here our entire "๐Ÿ’‰ Inside of the BODY Anatomy Unit Study."