COMING UP THIS WEEK
Monday, October 7
- Photo Day
Tuesday, October 8
- 8:15 iWalk to School
- 1:30 Thanksgiving Mass
READERS PLEASE PRACTICE READING
Friday, October 11 - P.D. Day
Monday, October 14th - Thanksgiving Day
MATH:
Representing 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100
A multiple of 10 is any number that can be shown as full groups of 10
with no extras.
Multiples of 10 all end in zero. Students in Grade 2 do not need to
know the term
“multiple.” Instead, you can call multiples of 10 the 10s numbers.
You can represent multiples of 10 using 10-frames filled with counters.
For example, 50 can be shown as five full 10-frames.
Full 10-frames can also be used to represent 10, 20, 30, 40, 60,
70, 80, 90, and 100.
The 10s numbers can also be shown using stacks of 10 linking cubes.
These stacks show the numbers 80 and 30.
If you show these numbers with tally marks, you will use only
complete tallies with
4 sticks and a line crossing them, and never tallies with leftover sticks.
These groups of tally marks also show 80 and 30.
You can also represent groups of 10 using an abacus or a number rack,
such as a Rekenrek. You will move over entire rows of beads but will
not move not partial rows. These number racks show 80 and 30, too.
Number lines also work for representing multiples of 10.
A number line can be built from a number path, with marks
showing where each number’s square ends.
If you want to show a big spread of numbers, you don’t show
every number on the line. The number line below shows multiples
of 10. Numbers appear 10, or a multiple of 10,
apart. Just as 3 and 8 are 5 ones apart, 30 and 80 are 5 tens apart.
Helping Your Child With New Words
You can help your child connect the words to the quantities
they represent.
10
|
ten
|
60
|
sixty
| |
20
|
twenty
|
70
|
seventy
| |
30
|
thirty
|
80
|
eighty
| |
40
|
forty
|
90
|
ninety
| |
50
|
fifty
|
100
|
one hundred
|
Helping Your Child
Provide opportunities for your child to count by 10s at home.
For example:
•
|
If there are two boxes of 10 pencils, you could ask how many pencils
there are altogether.
|
•
|
You could show six piles of paper clips with 10 in each pile and ask
how many there are
altogether.
|
•
|
You could use tally marks to keep track of scores in a game or how
many times something happens.
|
Definitions
10-frame: a frame that holds 10 counters in 2 rows of 5 squares each;
you place one counter in each square to show a particular number
you place one counter in each square to show a particular number
linking cubes: interlocking cubes often used to represent quantities
number line: a line on which numbers are marked in sequence
number path: a counting tool in which each number in a series is
contained within a cell, or rectangle
number rack (such as a Rekenrek): a rack with rows of 10 beads
that can be slid to one side; 5 beads in each row are a different
colour to help students visualize groups of
numbers
represent: to show quantity; a single quantity can be represented
in many ways, for example, with pictures, models, words, or actions
tally marks: groups of short lines used to show amounts;
4 straight lines show 1, 2, 3, 4, and then a diagonal stick across
those lines shows 5
LANGUAGE
In writing, we have been working on RECOUNTS.
As a class, we recount our Terry Fox walk:
The students are working on recounting a fun day
with a friend.
HEALTH:
The focus in health has been healthy eating. We read the
book 'Eat Healthy, Feel Great' and had a discussion about green,
yellow and red foods.
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