Subitizing

I just wanted you to know that I practice what I teach. We have a entering kindergartener in the house and I am beginning to work with her on subitizing numbers. 

 Subitizing means to instantly recognize a quantity without counting.

 These are the steps in my house to the second floor. I taped the number dots on the risers of the stairs.  As she walks upstairs, she says their value... 3,3,2,3,2 and so on.  I will change the cards to  larger number values as the posted numbers become too easy.  Since she will be in a Dual Language Class, next she will say the numbers in Spanish too.  In her class, math is taught in Spanish.

John Van de Walle discusses subitizing in his book, "Teaching Student-Centered Mathematics: Grades K-3."  You can print a copy of his blackline masters of the dot patterns that are smaller in size than shown in my photo. Just click here .

I always say-  break in down in learnable bits...

 with a spoonful of sugar.

Smiles,

Deborah

Systematic Flashcards to Learn 9's Multiplication Facts

I created a set of flashcards to systematically learn the nine’s multiplication facts. These cards are based on the work of John Van De Walle.

This is how I envision the system working

First, the students must know the combination of two numbers that when added together a sum of nine results. For example, 2 + 7 = 9, so I included a set of flashcards to practice those addition facts.

Next, I made a set of cards that teaches students that the product’s tens place digit will be one less than the “other” factor multiplied by nine. 

The next pattern is that when you add the two digits in the product the sum will be nine.

Then it practices the two ideas together.



Lastly, no support is given.





Ta Dah…students know their nine multiplication facts.

Download by clicking here. It’s free for my blog friends and I’m putting it in my TPT store with a cost for everyone else. See how much you mean to me!!!

Want more flashcards based on the work of John Van De Walle? Leave me some comments with your thoughts.

Deborah