Mathematical Emphasis
Investigation 1
* Finding combinations of Numbers
up to about 20
* Finding the total of two or more single-
digit numbers
* Exploring relationships among different
combinations of a number
Investigation 2
* Developing strategies for organizing
sets of objects so that they are easy
to count and combine
* Finding the total of several 2’s, 4,s, 5’s
or 10’s
* Recording strategies for counting and
combining using pictures, numbers
and words
* Reading, writing and sequencing
numbers to 100
* Becoming familiar with coins and
equivalencies among them
Investigation 3
* Visualizing combining and separating
problem situations
* Developing strategies for solving and
separating story problems
* Recording strategies for solving and
separating story problems
* Using pictures, number, words and
equations
Websites
http://cms.everett.K12.wa.us/math/First
Grade
Count Us In—Game 1
http://www.abc.net.au/countusin/games/ga
me1.htm
Rainforest Maths—addition/subtraction
http://www.rainforestmaths.com/
Tips for Helping at Home
•
Take time to learn some of the
math games we are playing with
number cards, dot cards, coins,
and counters.
•
Look for addition and subtraction
situations at home (numbers under
25 are about right for many 1st
graders).
•
Your child may work out the an-
swers by using counters such as
pennies, buttons or paper clips. Or,
your child might draw pictures,
write down steps, or work mentally.
Addition and Subtraction
How to help when your student gets
stuck. . .
•
What do you need to find out?
Student should be specific.
•
What information do you have?
•
What strategies are you going to
use?
•
Does that make sense?
•
How do you know?
•
How did you get answer?
•
Does your answer seem reasonable?
•
What else is there to do?
Strategies
Strategies will vary depending on the size of
the number and the developmental level of
the
child.
•
Students may be using counters.
•
Students may be counting on or counting
back.
•
Students may be breaking numbers apart
and using 10 as a landmark number.
Vocabulary
•
image—another word for a
picture
•
doubles—2 of the same
number
•
counting around—a way to
practice counting by going
from one person to another
•
combining—putting numbers
together
•
separating—taking numbers
apart
Game
Tens Go Fish
(This game is played just like Go Fish.)
You will need one deck of number cards
(0—10) - no wild cards and 2—4 play-
ers.
Object:
Find pairs of cards that total 10.
Directions:
1. Deal five cards to each player. Place
the rest of the cards face down.
2. If you have any pairs of cards that
total 10, put them down in front of
you. Then replace them by drawing
cards from the deck.
3. Take turns. On your turn, ask one
other player for a card that will make
10 with a card in your hand. If you
get what you ask for, put that pair
down. Whether or not you make a
pair, draw a card. If the card you
draw makes a pair, put that card
down and draw again. When you
can’t make another 10, your turn is
over. Any time you use all the cards
in your hand, draw two cards.
4. The game is over when there are no
more cards
5. At the end of the game, list the com-
binations of 10 you made.
Online Glossary
http://www.amathsdictionaryforkids.com/
Kliman, Marlene. Investigations in Number, Data, and
Space: Number Games and Story Problems. Dale
Seymour Publications, 1998.
