Transcript Welcome to Jefferson’s Second Family Math Night

Welcome to
Everyday Math
Information Session about
Everyday Math, Homework,
Math Algorithms (What’s that?)
Everyday Math Rationale
• A research-based program Norman adopted
for all elementary schools.
• Significant increase in 2006-2007 test
scores.
• Fifth graders-89% passed, 39% advanced
• Fourth Graders-97% passed, 26% advanced
• Third Graders-98% passed, 51% advanced
• Rigorous math instruction is the focus, leading
students to deepen their math knowledge.
Everyday Math
• Students will
– discuss math strategies,
– write about math activities,
– practice math through challenging games,
– use math materials in meaningful ways to
solve problems,
– understand measurement, geometry,
probability, estimation,
– accurately memorize & understand basic
facts,
– organize data,
– develop money-smarts,
– and reason logically.
Math instruction includes
a LOT more than it did when
we were in school…
Everyday Math uses a
spiraling instructional
model.
• Learning goals link from the past to the
future.
• Students show beginning, developing, and
secure skills on math concepts.
• The spiral may take two to three years for
mastery to be achieved.
• Concepts are consistently reviewed
throughout the model.
• Learning goals are based on six
math strands of knowledge.
– Operations & Computation
– Numeration
– Patterns, Functions &
Algebra
– Data & Probability
– Measurement
– Geometry
What about homework?
When each unit begins, a parent
information letter is sent home
explaining math ideas for the unit.
Shhh!
(It has all homework answers for the
unit.)
KEEP THIS LETTER IN A SAFE PLACE!
• Your child will receive a homework
assignment for each lesson in every unit.
• Intermediate grade work is called “Study
Links.”
More Homework Info
• Everyday Math work may seem very
different than math we did when we
were in school.
• If you and/or your child do not
understand the homework, write a note
to the teacher and help will be provided.
• We expect and respect parent
questions.
HOW CAN I HELP AT HOME?
• Help your child memorize math facts
(multiplication and division in the fifth
grade)
• Play Math Games
• Ask questions of both your child and
your child’s teacher
What in the world is an
algorithm?
• Algorithms are steps used in solving a math
question. You learned them as a child when
doing addition, subtraction, multiplication,
and division. Most of us learned one way to
solve problems.
• Everyday Math has one “focus” algorithm
for each math operation but a variety of
methods are explained so students can
choose the one they like best.
• Having lots of ways to figure out math
questions is like having lots of tools in your
toolbox.
Partial Sums Addition
• Add one place-value column at a time.
• Write each partial sum below the
problem.
• Then add all partial sums to find the
total.
835
+ 243
(800 + 200)
1,000
(30 + 40)
70
(5 + 3)
8
Add partial sums 1,078
Trade-First Algorithm for
Subtraction
• Look at the numbers in each place-value
column.
• Trade until the top number in each column is
at least as large as the bottom number.
• Then subtract the numbers in each column to
find the difference.
7
3
8 -
6 13
7 3 8
4 5 2
-
6 13
7 3 8
4 5 2
28 6
Partial-Products Algorithm for
Multiplication
• Multiply each digit in the bottom factor by each
digit in the top factor. Then add all of the partial
products to find the total product.
100s
10s
1s
2
4
5
*
9
Multiply 9 x 200
1
8
0
0
Multiply 9 x 40
3
6
0
Multiply 9 x 5
+
4
5
2,
2
0
5
Partial-Quotients Algorithm for Division
Example:
238 divided by 12
How many 12s are in 238? (At
least 10 as 10 x 12 = 120.)
Subtract 120 from 238.
“How many 12’s are in 118? (9
as 9 x 12 = 108) Subtract 108
from 118. The difference is
the remainder (as it is less
than 12.) Add the partial
quotients to find the quotient.
The answer is 19, R10.
12 238
- 120
10
118
- 108
9
10
19
Remainder
Quotient