2. What is a Venn Diagram?
Is a type of graphic organizer that uses overlapping circles to
visually represent the commonalities amongst sets of information.
It is used in math to help children understand word
problems, addition, subtraction, multiplication, and division.
3. All ages can use Venn
Diagrams
The Venn diagram in kindergarten? Yes! Venn diagrams
can be used effectively by our youngest students. The
trick is to make them user-friendly, hands-on, and
developmentally appropriate as a tool even kindergarten
students can use with ease. Guide students toward an
understanding of the Venn diagram by letting them
physically manipulate hoola by side, have students to
help you sort the balls, with one color in each hoop.
Allow students to problem-solve to figure out what to do
with the bi-colored ball, prompting them by physically
overlapping the hoola hoops if needed. help students
label the Venn diagram using index cards, and explore
other ways it can be used. In other sessions, students
can sort shapes, animals, and other objects. hoops.
Begin with two hoops and two colors of blass, with one
ball containing both colors. With the hoops side
4. Rules For Adding, Subtracting, Multiplying and
Dividing Numbers with the same and different
signs.
If the signs are the SAME, then the answer is
POSITIVE.
If the signs are DIFFERENT, then the answer is
NEGATIVE.
6. Adding and Subtracting
Addition and subtraction
skills can be worked into
many activities at all
levels of elementary
school. Throughout
elementary
school, students work to
master all the facets of
addition and subtraction
listed on state standards
and benchmarks across the
nation. Many of the
activities disguise fact
practicing behind an
engaging game that
students enjoy
participating in while 5+0=5
working on mastery of the
concept.
7. How Addition and Subtraction
Problems using a Number
Line
Use the number line for adding
and subtracting integers: Here is a youtube link
Add a positive integer by moving that will help explain
to the right on the number line how to add and
Add a negative integer by subtract using a
moving to the left on the number
line number line
Subtract an integer by adding its
opposite http://www.youtube.com
Try it by clicking on the /watch?v=byTIRd74ryo&f
problems below.
eature=player_embedded
Watch out! The negative of a
negative is the opposite positive #!
number. That is, for real
numbers, - (- a ) = + a
8. Multiplying and
Dividing
To multiply integers with like signs, multiply the numbers and put a positive sign in front of the
answer, regardless of whether the numbers were both positive or both negative.
Imagine you're going on a trip with three friends and you want to split the cost evenly. The trip costs
$200, so each person will have to contribute $50.
2To divide integers with like signs, divide the numbers and put a positive sign in front of the
answer, regardless of whether the numbers were both positive or both negative.
There is no good way to model this one. You just have to accept that it works out this way.
3To multiply integers with unlike signs, multiply the numbers and put a negative sign in front of the
answer. This is different from adding or subtracting signed integers because it doesn't matter which
number is larger.
For example, if three people each buy a $2 fruit smoothie, then they'll owe the cashier $6.
4To divide integers with unlike signs, divide the numbers and put a negative sign in front of the
answer. This is also different from adding or subtracting signed integers because it still doesn't
matter which number is larger.
Six friends go in together on something that costs $18. If they split it evenly, each person will owe $3.
