Showing posts with label math lesson review. Show all posts
Showing posts with label math lesson review. Show all posts

Wednesday, May 21, 2008

Probability resources and links

There is a show called "Let's Make A Deal." It's a game show and it is a really good example of the concept of Probability.

http://mathforum.org/dr.math/faq/faq.monty.hall.html


Review (on-line) of concepts taught so far:
http://www.brainpop.com/math/probability/basicprobability/preview.weml

(user name: classofmissr password: underhill)
or

http://www.mathgoodies.com/lessons/vol6/intro_probability.html


An advanced lesson:
conditional probability
eg.
The probability that it is Friday and that a student is absent is 0.03.

Since there are 5 school days in a week, the probability that it is Friday is 1/5 (or 0.2).

What is the probability that a student is absent given that today is Friday?

Solution: The probability that a student is absent since today is Friday is.

P (absent + Friday) = 0.03
_______ ----
P (Friday) 0.2

= 0.15 or 15 %



http://www.mathgoodies.com/lessons/vol6/conditional.html

Tuesday, December 18, 2007

Measurement and conversion notes:

(Here are a couple of new / fun math sites for you: http://www.mathcats.com/explore.html

and http://mathcentral.uregina.ca/index.php

All three measures are interrelated:

Capacity (liquid) mL and L

Mass (usually solid) g and kg

Volume (can be many states cm3 and m3)


1 mL = 1 g = 1cm3


What do you measure using mL? g? cm3?


Give an example of each.



Write examples of three common everyday objects and how MUCH stuff each has in it.


Miss R example: can of pop – capacity - 355 mL


1 L = 1 kg = 1000 cm3 (or 1 dm3) dm = decimetre = 10 cm ( volume 1 x w x h

10 x 10 x 10 = 1000 cm3)

What do you measure using L? kg? dm3?


Give an example of each.



Write examples of three common everyday objects and how MUCH stuff each has in it.


1 m3 = 1 tonne (1000 kg) = 1 kL (1000 L)


Part 2


How can you manipulate a number according to its units.


What is 234 cm as mm? as metres?


Create a chart starting with the smallest unit that we study: mm and show the powers of 10 up until km.

How does the decimal move?


Metres is the standard unit for length.

Show the same prefixes for capacity Litre is the standard unit and also use mass (gram is the standard unit). All use the same prefixes.

How does the decimal move?



Wednesday, December 12, 2007

Homework for Wed. Dec. 12, 2007

Multiplying by powers of 10.










remember any number (before a decimal) is a whole number.
after the decimal (right) are parts of a whole.








123x 1000123,000move the decimal 3 to the right
123x 10012,300move the decimal 2 to the right
123x 101230move the decimal 1 to the right
123x1123do not move the decimal
(like saying I'm making x groups of 123. The answer is bigger or the same as 123.)







123x 0.112.3move the decimal 1 to the left
123x0.011.23move the decimal 2 to the left
123x0.0010.123move the decimal 3 to the left
(like saying needs to make 123 into x number of groups)
123 x 0.1 make 123 into groups of 10 (x by 1/10 or one tenth)







Every whole number has a decimal to the right of it.
















Math pg 117 question 3

L.A. - Hand in your paragraph planner for examining lyrics
Be prepared to fill out a paragraph planner (using the proper format) from a random reading picked by Miss R. from the History reading.

-topic/introduction/opening sentence (answer the question)
- three detail sentences with proof/details/examples from the text
- concluding/closing sentence (closes the one idea / one paragraph)

L.A. - your card planner should be complete

Read for 20 minutes.

FRENCH

Ronronpatapon sheet

OTHER

Bring toiletries

send card pics on tel
All overdue work still DUE. See chart paper for your name.