School RULES! Math. Emma MacLaren Henke
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Название: School RULES! Math
Автор: Emma MacLaren Henke
Издательство: Ingram
Жанр: Учебная литература
Серия: American Girl
isbn: 9781609587635
isbn:
Whether math is your favorite subject or your favorite subject to avoid, your
brain is made for math. Every time you take a step, your mind figures how
far to move your foot. Every time you catch a ball, your mind calculates how
fast it’s coming toward you and tells you when to put up your hands. In math
class, you learn the concepts behind things your body and mind do naturally.
Tools of the Trade
Prep for success with the right supplies.
your favorite pencils
Use pencils instead of
pens so you can easily erase.
scratch paper
Diagram, draw, or
calculate on blank
paper when you’re
trying to figure
out tricky math
problems.
protractor
Draw proper angles
and curves.
engineer’s or
artist’s eraser
A good vinyl or
plastic eraser lets
you rub away
mistakes with-
out smudging
your paper.
ruler Measure accurately and draw straight lines.
graph paper
It’s a mathematician’s best friend!
Use it to
keep your
computation
super neat
or to figure
out complex
problems.
calculator
It’s OK to use a calculator to
check homework answers, as
long as you do the work first!
dry-erase board
Just erase and use it over and over
again to solve problems. It’s fun!
flash
cards
These are great for practicing math facts!
small blocks, pennies,
beads, or beans
When you get stuck on a story problem,
use manipulatives to help solve it.
Isabel T.
Math - Ms. Pliner
1. 4 4 3
+ 1 2 6
5 6 9
2. 4X
3=12
1 2 3 4
5 6 7 8
9101112
3
4
Lena
ms. Janke
1. Greta picked 12 apples
but kay picked only
half as many. How
many apples did Kay
pick?
Kay picked 6 apples.
Terrific Triangles
When you need to memorize math facts, triangle-shaped
flash cards can point you in the right direction.
Triangle flash cards help you master fact families. With these cards, you do more than just memorize math facts. You also see how addition is related to subtraction and how multiplication is related to division.
A single set of cards is used for both addition and subtraction. One point of a
card shows a sum (the total, or the answer to an addition problem), and the other two points show the addends—the numbers that add up to the sum.
Here’s how each card works.
sum
addend
addend
Quiz yourself by covering the sum with
your thumb. Look at the two addends,
and think out or call out the sum.
7 + 6 = 13 6 + 7 = 13
Quiz yourself by covering one addend.
Look at the sum, and subtract the
addend that’s not covered to figure out
the addend that’s hidden. Then cover
the other addend and do it again.
13 - 6 = 7 13 - 7 = 6
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