Day: October 23, 2018

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Math – Number Sense & Numeration

Posted on by largue

In math, we have been working on the Number Sense and Numeration strand. Your child has been working with numbers from 0 – 1000. In class we have been focusing on representing  and describing numbers such as 894 in a variety of ways and situations (e.g. standard form, expanded form, in words, using base ten blocks, sketching a model, etc.). Relationships among numbers and among digits in numbers has been emphasized as well as students have had to rename, compare and order numbers.

Here are the expectations that we have covered in this first unit according to the Ontario Math Curriculum:
– represent, compare, and order whole numbers to 1000, using a variety of tools (e.g., base ten materials or drawings of them, number lines with increments of 100 or other appropriate amounts);
– read and print in words whole numbers to one hundred, using meaningful contexts (e.g., books, speed limit signs);
– identify and represent the value of a digit in a number according to its position in the number (e.g., use base ten materials to show that the 3 in 324 represents 3 hundreds);
– compose and decompose three-digit numbers into hundreds, tens, and ones in a variety of ways, using concrete materials (e.g., use base ten materials to decompose 327 into 3 hundreds, 2 tens, and 7 ones, or into 2 hundreds, 12 tens, and 7 ones);

Here are some activities that you and your child can do to practice some of these concepts at home:

  • You and your child can play a game using two sets of number cards labelled 0 to 9. Shuffle the cards and, without looking, choose 2 cards to form a 2-digit number. Ask your child to say the number, and to write the number in expanded form using numbers and words. For example, 75 can be made from two cards numbered 7 and 5. In expanded form, it is written as 70 + 5 and in expanded form with words, it is 7 tens 5 ones. After your child has had lots of practice with 2-digit numbers, you can play the same game with 3-digit numbers, using three sets of numbered cards.
  • Say aloud various 2- and 3-digit numbers and ask your child to find the cards to make the numbers.
  • Choose a book with a large number of pages. Open the book to a random page and ask your child to tell you the numbers 1 greater than, 1 less than, 10 greater than, and 10 less than the page number.

Today students completed a practice math quiz on these concepts. I will be marking it and sending home with them on Wednesday in their blue duotang so that they can review these concepts and be prepared for the actual quiz this Thursday, October 25th!

A great way for your child to practice is to try the Online Quizzes for each lesson on the Nelson Math website.

The quizzes that students can complete are:

Chapter 2 – Numeration

Lesson 1 – Representing Numbers

Lesson 2 – Renaming Numbers

Lesson 5 – Comparing and Ordering

Click on this link to take you to the Nelson Math site: http://www.nelson.com/school/elementary/mathK8/math3/studentcentre/studtryout.html#ch2

Please let me know if you have any questions!

Ms. Argue 🙂