Wednesday, December 3, 2008

Unit 4 Study Guide

Our Unit 4 Test is scheduled for Monday, December 8.

1. "Friendly numbers" - Remember that you can break numbers such as 72 divided by 3 into "friendly numbers" such as 60+12.
3 goes into 60 -- 20 times and 3 goes into 12 --4 times so the answer is 24 (20 + 4).

Practice doing that with other numbers such as:
56 divided by 4 (find friendly numbers for 56 that 4 will go into)

129 divided by 3

2. Practice long division with one, two, and three digit divisors.

3. Practice making estimates to division problems with decimals and then dividing with decimals...don't forget to line up your numbers and write neatly. Also remember that you can correct a division problem by multiplying the quotient by the divisor and you should get the dividend. (practice your vocabulary)

4. Work on interpreting remainders...know when to ignore them, when to report the remainder as a fraction or decimal, or when to round the answer up.

Monday, November 10, 2008

Unit 3 Study Guide

The Unit 3 Test will be on Friday, November 14.  Don't forget, you can earn up to 3 extra credit points on your test if you turn in your Tessellation project on Friday!

1. Please know the definitions of the following:

Acute Angles - less than 90 degrees

Right Angles - 90 degrees exactly

Obtuse Angles - greater than 90 degrees, less than 180 degrees

Reflex Angles - greater than 180 degrees

Adjacent Angles - angles that are "next" to each other, they share a side and a vertex

Opposite/Vertical Angles - When two lines intersect, four angles are formed. The angles opposite each other are called vertical or opposite angles.

Polygons - closed figures with straight sides

Triangles - polygon with 3 sides and 3 angles

Equilateral triangle - 3 equal sides

Isosceles triangle - at least 2 equal sides

Scalene triangle - no equal sides

Quadrangle - polygon with 4 angles, same as a quadrilateral, which is a polygon with 4 sides and angles

Pentagon - polygon with 5 sides and angles

Hexagon - polygon with 6 sides and angles

Octagon - polygon with 8 sides and angles

Parallel lines - lines that run side by side and never meet

Congruent - having the same exact size and shape

2. Be able to tell how some polygons are alike and how they are different.

3. Be able to measure angles with a protractor.

4. Be able to draw and label adjacent angles.

5. Be able to draw each type of triangle: equilateral, isosceles, and scalene.

6. Be able to use your template to make a tessellation.

7. Know place value from hundredths place to hundred millions place.

___ ___ ___, ___ _______, ___ ___ ___ . ___ ___

8. Be able to multiply multiples of 10.

300 * 4000 = _____ 50 * 800 = _____

27,000 = 90 * _____ 300,000 = 6000 * _____

9. Find the maximum, minimum, range, mode, and median of a set of data.

24, 32, 36, 27, 24, 40, 34, 38

maximum ____ minimum ____ range ____ mode _____

median _____

10. Know that the three angles of a triangle have a sum of 180 degrees and that the four angles of a quadrilateral have a sum of 360 degrees.

Tuesday, October 28, 2008

Fun with Angles!

Click here to play an angle game where you find the 8 planets.

Click here to play Banana Hunt.

Click here to play Alien Angles.  You will practice estimating angles with this fun geometry game.

Click here to play Angle Measure.

Click here to use angle measurements to fire lasers at comets in outer space.

Wednesday, October 22, 2008

Unit 2 Test


Great job on the test yesterday!  Many of you tried the extra credit and received either 1 or 2 bonus points.  Several of you also attempted the extra credit assignment last week on the Egyptian math method.  If so, you received 1-3 bonus points on the Unit 2 test.  

Today you will receive your graded test, along with your self-assessment checklist, study guide, and extra credit WS.  These will all be attached to your current progress report.  Please show the papers to your parents and have a parent sign the progress report.

Monday, October 13, 2008

Unit 2 Study Guide

The Unit 2 Test will be on Tuesday, Oct. 21.

1. Know the following words and definitions:

maximum

minimum

range

mode

median

variables

open sentence

2. Be able to add and subtract whole numbers and decimals.

3. Be able to find magnitude estimates of products like the ones on p. 47 in your math journals. The be able to multiply to find the actual products.

ex. 4.5 * 0.6 ex. 46 * 414
5 * 1 = 5 50 * 400 = 20,000

4. Know place value - thousandths through millions place.

5. Be able to read a word problem and tell (a) what numbers are needed to solve the problem, (b) what question do you want to answer, (c) write an open sentence - with a variable, (d) solve it.

ex. - Joe has 46 baseball cards. He gave 12 to his brother who had only 10. How many cards does Joe have now?

a. What numbers do you need to solve? ___________________

b. What question do you want to answer? ___________________

c. Open sentence ______________________________________

d. solution _______________ e. answer ____________(units)

6. Be able to round numbers to a given place from hundreds to thousandths.

ex. round 27.46 to the nearest tenths - 27.5

ex. round 467.8 to the nearest hundreds - 500

Monday, October 6, 2008

Data Landmarks


Today we reviewed the data landmarks:  minimum, maximum, range, mode, median, and mean. Click here for definitions and examples of these terms.

Friday, September 26, 2008

Congratulations and Welcome!!!


Thank you all so much for welcoming our newest classmates with such warm smiles and applause. We had a great day of reviewing Unit 1 today so that our new mathematicians feel like they didn't miss out!  

We started learning how to use the traditional method of long division today.  Here are some helpful websites on long division:
Long Division - Choose your own divisors and dividends!
Long Division Game - Very funny...HEE HAW!!!

Monday, September 22, 2008

Unit 1 Study Guide

1. Know the definitions of the following words:

columns - vertical lines of data

rows - horizontal lines of data

arrays

factors

products

prime

composite

square numbers

2. Be able to find all the factors of a number by making arrays or making a rainbow factor.

3. Be able to find the prime factorization of a number. (journal p. 24, student reference book p. 12)

4. Be able to square a number (ex. 42 = 16) and unsquare (tell the square root of) a number. (ex. the square root of 16 is 4) (p. 6 in student reference book)

5. Tell whether a number is odd or even, prime or composite, or is square. (p. 4, 12, and 214 in student reference book)

6. Be able to use the divisibility rules on p. 11 of student reference book.

Our first test will be on Wednesday, 9/24/08.  I know that you will do great!!!  If you have any questions, or would like to review any of the concepts with me, please let me know. :)

Friday, September 19, 2008

Square Number Games


Click here to play Perfect Squares Number Cop.

Click here to play Spooky Sequences Square Numbers.

Find the square root of the square number here.

Thursday, September 18, 2008

MAP Test


Great job today, fourth graders!  You all stayed focused during today's MAP test in the LMC.  

Here are some multi-digit multiplication problems for you to practice.  Click here.

Wednesday, September 17, 2008

Goldbach's Conjecture


Click here to explore Goldbach's Conjecture with this calculator.  Click on any even number greater than 4 and the calculator will find all the Goldbach pairs.

Thursday, September 11, 2008

Divisibility Rules



Today we went over the divisibility rules for 2, 3, 5, 6, 9, and 10.  Click here to see the divisibility rules for 2-12.  

Click here to play a divisibility game.

Tonight's homework:  SL 1.5 and Enrichment 1.5

Wednesday, September 10, 2008

Magic Squares


Great job on trying the enrichment lesson last night!  I know some of you got frustrated trying to figure it out, but I'm proud of you for giving it a shot!  


Tonight's homework is Study Link 1.4.

We enjoyed learning how to play Factor Captor today.  Click here
to play a factor game that is similar to the one we played in class. Make sure you follow the directions because it is slightly different from how we played. You can either play against the computer or with another opponent at home!

Tuesday, September 9, 2008

Schoolhouse Rock Multiplication Videos

My Hero Zero


Elementary, My Dear(2s)


Three is a Magic Number


The Four Legged Zoo


Ready or Not (Multiply by 5's)


I've Got Six


Lucky Seven



Figure Eight


Naughty Number Nine


The Good Eleven


Twelvetoes

Tuesday, September 9


Tonight's homework is to complete study link 1.3 and enrichment lesson 1.3.

Our first enrichment lesson was on magic square arrays.  Click here to test your knowledge on magic squares!

Monday, September 8, 2008

District Math MAP Test Schedule


Fourth grade students will take the Math MAP test with their Math class.

Miss Lee’s Math Class will take the test on Thurs., Sept. 18, at 1:30 p.m.

Please help your child get a good night’s rest before the test and eat a healthy breakfast the morning of the test. Thanks so much!
-Miss Lee

Saturday, September 6, 2008

What We Hope to Learn This Year...


Here's what our class is most looking forward to learning in math class this year:
  • how to multiply big numbers like 80 x 73
  • I want to learn how to learn to add and subtract fractions.
  • I want to learn to do long and hard and confusing division.
  • I really want to learn about percent.  I know how to do very easy percent.
  • I want to learn about percents.
  • how to multiply and divide fractions
  • how to use a protractor
  • writing fourths and fifths in decimal form
  • protractor and * sign
  • Almost everything!
  • long multiplication
  • long division
  • how to add, subtract, divide, and multiply fractions
  • I am really anxious about learning big division.
  • I want to learn what fractions like 6/5 mean.