Thursday, 26 June 2014

Animal Extinction

Should we try to save every animal facing extinction?

That's the question being asked after a new UN climate report card said Australia will continue to get hotter in the future and because of that some native species might face extinction. The government spends a lot of money trying to stop native animals from dying out but some scientists say we should ONLY put that money towards helping some of them. It's a controversial idea and after watching this BTN story 5/6's were asked what they thought.

List your opinion following the clip below. Remember to only use your first name, otherwise your comment will not be posted.

After listing your comment, review those made by grade 6's from Wanervale Primary School
http://www.warnervale-p.schools.nsw.edu.au/years/year-6/6k/polls/animal-extinction

Debate.org has asked, with 85% saying Yes.
http://www.debate.org/opinions/should-we-protect-endangered-species

Wednesday, 25 June 2014

Chance and data

Probability

How likely something is to happen.

Many events can't be predicted with total certainty. The best we can say is how likely they are to happen, using the idea of probability.

Tossing a Coin

When a coin is tossed, there are two possible outcomes:

heads (H) or
tails (T)

We say that the probability of the coin landing H is ½.
And the probability of the coin landing T is ½.

Throwing Dice

When a single die is thrown, there are six possible outcomes: 1, 2, 3, 4, 5, 6.
The probability of any one of them is 1/6.

Probability

In general:

Probability of an event happening =		Number of ways it can happen

		Total number of outcomes

Example: the chances of rolling a "4" with a die

Number of ways it can happen: 1 (there is only 1 face with a "4" on it)
Total number of outcomes: 6 (there are 6 faces altogether)

So the probability =	1

	6

Example: there are 5 marbles in a bag: 4 are blue, and 1 is red. What is the probability that a blue marble will be picked?

Number of ways it can happen: 4 (there are 4 blues)
Total number of outcomes: 5 (there are 5 marbles in total)

So the probability =	4	= 0.8

	5

Probability Line

You can show probability on a Probability Line:

Probability is always between 0 and 1

Probability is Just a Guide

Probability does not tell us exactly what will happen, it is just a guide

Example: toss a coin 100 times, how many Heads will come up?

Probability says that heads have a ½ chance, so we would expect 50 Heads.
But when you actually try it out you might get 48 heads, or 55 heads ... or anything really, but in most cases it will be a number near 50.

Source: http://www.mathsisfun.com/data/probability.html

Tuesday, 24 June 2014

When to change paragraphs

The secret life of...

Multiplication online games

Jim Jim plays the drums- Quick recall on multiplication facts 0-9 : Using drums 6-9
http://www.multiplication.com/games/play/jungle-jim-plays-drums

Disco Dino- Recall on facts 0-12
http://www.multiplication.com/games/play/disco-dino

Pirate Game: Multiply numbers by powers of 10
http://www.math-play.com/Pirate-Game-Multiply-Numbers-Ending-in-Zeroes/Pirate-Game-Multiply-Numbers-Ending-in-Zeroes.html

Basketball Math: Can you get the multiplication question right to shoot for goal?
http://www.math-play.com/one-digit-multiplication-game.html

As usual, if you find any other games, be sure to copy the link into the comment box below

Plus- Minus- Interesting

LI: To be able to review clip using P-M-I chart.

Watch the following BTN clip: Animal Extinction : http://www.abc.net.au/btn/story/s3974781.htm

List the positive (plus) aspects discussed within the clip. Complete this for the negative (minus) and interesting parts.

Interesting can be aspects you didn't consider before, new information learnt or something you think is both plus/ minus from the topic.