Height investigation

In February Room 34 all measured our heights and recorded them. We also estimated how tall we would be in December. This week we all measured our heights again to see how close we got. Check out the graph that shows our results. Some people came pretty close to their estimate and some grew even taller! We found that many of us grew exactly 5cm this year. Obviously Joel grew even more than that!

Place Value

In our ikan Maths knowledge test we came out weakest at place value so we are going to be doing lots of practise!

What is Place Value?

Place value is the value of where a digit is in a number.

Finding a number's place value: When finding the place value of a particular number, it helps to write out exactly what the number means. Listen as it is explained in this video by Khan Academy.

 

Place Value Games

practise these at home or in Maths computer time

Mystery numbers

Place value millionaire

Scooter Quest

Fractions Fun!

In Maths this week we are making videos to explain our learning. Watch these to learn what we are up to.

 

 

Maths Week 8- Back to Fractions!

Squares

WALT: Find a fraction of a set
WALT: Answer fraction word problems
Play the fractions of a set game under math links.
Can you answer this fraction word problem? Write your answer and explanation of HOW you worked it out as a comment to this post to get a dojo point.
The weather forecaster says that it is 200 C in London but only 7/10 as hot in New York.

How hot is it in New York?

Circles

WALT: Solve improper fractions
WALT: Find a fraction of a set
Here is a fantastic tutorial on improper fractions.
Try the jeopardy game for improper fractions under maths links.
Play the fractions of a set game under math links.

 

Triangles

WALT: Find a fraction of a set

Here is the game that goes along with this tutorial!

Hexagons

WALT: use our timetables to find a fraction of a set
Play the fractions of a set game under math links.

We have been learning to simplify fractions. Here Emily and Eve explain how.

Maths Week 6

Hexagons

WALT: simplify fractions.
have a go at this packman style game to simplify fractions. Mathman.
Here is a really good video explaining how do to this (so you can teach Mum and Dad!).

Circles and Squares

We are looking at different ways to subtract when the number you are subtracting has larger digits in it. E.g. 23-17. Look at all of the ways the squares thought of to solve this problem.

Triangles

We are learning to subtract by splitting a number into parts and going to a tidy number.
E.g. 13-5 as 13-3=10, 10-2=8
To be good at this we need to be really good at our number bonds to ten and basic facts to 10.
Practise your basic subtraction with this range of games from multiplication.com

The Amazing Math Race- Answers

Well done to all those keen mathematicians who travelled around the world this week on the Amazing Math Race.
Below are the answers to the problems.
Mrs Carryer will be checking homework books and giving out dojo points and prizes on Monday.

Monday

1.      A plane travels faster                                                 

2.      24 hours              

3.      7 days                  
4.      3 weeks            
5.      24 hours            
6.      1884                   

7.      7 metres            

8.      $9                      

9.      $1                       

10.    9 letters    

Tuesday

1.      5, 4, 3                 

2.      Octagon       

3.      Five                    

4.      None (no corners)    

5.      4                          

6.      204                     

7.      2 hours              

8.      4    

9.      50 people          

10.    5 tens       

Wednesday

1.      9000                            

2.      8                                   

3.      80 minutes                 

4.      Yes                              

5.      10,12,14,16,18           

6.      10 kicks                      

7.      22 kicks                      

8.      7,9,11,13,15                

9.      5 dumplings               

10.    12 dumplings            

Thursday

1.      6500                             

2.      6                                   

3.      120km                         

4.      6, 8                               

5.      8000 metres               

6.      25 metres                   

7.      136 kilograms            

8.      10 warts                      

9.      Warthog                      

10.    15km faster

 

Friday

1.      One third                    

2.      4 koalas                      

3.      Half                              

4.      6 hours                       

5.      12 hops                       

6.      4,000,000                    

7.      18 million more         

8.      1103                             

9.      11                                 

10.    1003

Maths Week 5

Hexagons

WALT: add and subtract decimals
See the games under the math link to practise this: Decimal Jeopardy and Decimal Detective.

Squares and Circles

WALT: solve addition and subtraction problems using place value

Triangles

WALT: use doubles to add near doubles.


Have a go at Dinosaur Dentist to practice this!




Here is a video to help you explain this strategy to your parents!

The Amazing race- Friday

Friday:            The Final Destination.

1.      Two thirds of Australia is desert land which Aussies the 'outback'. What fraction is not desert land?

 

2.      In six trees you count 24 koalas. How many koalas are in each tree if there is an equal amount in each tree?

 

3.      Half of the koalas are eating eucalyptus leaves. What fraction of koalas are not eating?

 

4.      On average a koala sleeps for 18 hours a day, how many hours is it awake?

 

 

5.      A kangaroo bounces past.  It hops once every 5 seconds.  How many hops would it make in one minute?

 

You find another clue hidden in a eucalyptus tree and you snatch it away before a koala can munch it to pieces. The clue reads…

Return to New Zealand!

 

New Zealand has a population of approximately 4 million. Australia has a population of approximately 22 million.

 

6.      Write four million in numbers. 

 

7.      How many more people live in Australia?

 

8.      You race to the Sky Tower in Auckland.  It is 328 metres tall!

          You walk up 1103 steps to the top.

          Which number is larger:

          1103 or 328?

 

9.      How many hundreds are in 1103?

 

10.    One hundred steps before you reach the top you need a rest. 

          How many steps have you climbed now?

         

You get to the top! Congratulations!

You have completed the Amazing Maths Race!

The Amazing Maths Race- Thursday

Thursday:             Safari in Africa.

 

You fly from London to Africa where you travel up the Nile, the longest river in the world. It is 6670km long!

1.      Is 6670 closer to 6500 or 7000?

 

2.      How many thousands are in 6670?

 

3.      You travel 10km a day.

          How far would you have travelled after 12 days?

 

Next you go on an African safari and see a cheetah, pride of lions, a tower of giraffes, a bloat of hippopotamuses and a very smelly warthog.

 

4. You count the lions in the pride in twos, ‘2, 4, ?, ?, 10’. What are the missing numbers?

 

5. The roar of a lion can be heard 8km away!  How many metres are in 8 kilometres?

6.      The average giraffe is 5 metres tall, what would the height be if 5 giraffes were stacked on top of  each other? (That would   be silly, they would tip over!)

 

7.      A hippopotamus can eat up to 68 kilograms of food a day!

          How many kilograms of food would a hippopotamus eat after two days?

 

8.      If a warthog has 30 warts and 20 drop off, how  many warts does he           have left?

 

9.      The fastest speed a warthog can run is 56 kilometres per hour.

          A lion can run 81 kilometres per hour.

          A cheetah can run 96km per hour. Which animal is the slowest?

 

10.    How much faster than a lion is a cheetah?

 

Fly to Australia!

The Amazing Math race- Wednesday

Wednesday:          Asian Arithmetic.

You travel to The Great Wall of China in Beijing to find your next clue. The Great Wall is 8850km long!

 

1. Is 8850 closer to 8000 or 9000?

 

2. How many thousands are in 8000?

 

3. You walk along the wall for 35 minutes before having a rest.  Then continue on walking for another 45 minutes looking for your next clue.  How many minutes have you been walking for?

 

4. Have you been walking for more than one hour? 

You leave The Great Wall and travel to a local Chinese Village where you meet Foo the friendly Panda who is breaking two bricks at a time with his Kung Fu kicks.

 

5.      Foo counts the bricks in twos…2, 4, 6, 8…what are the next five numbers?

 

6.      How many kicks would it take Foo to break 20 bricks?

 

7.      How many kicks would it take Foo to break 44 bricks?      

         

8.      Foo smells a bowl of dumplings and loses count of his kicks so starts again from 1.

          1, 3, 5... what are the next five numbers?

 

 

You share the bowl of 10 dumplings (equally) with yourself and with Foo.

 

9.      How many dumplings do you each get?

 

10.    If you wanted 6 dumplings each, how many dumplings would you need?

Extension:

In 2013 the population of China was 1,364,660,000 people!  New Zealand has 4.4 million. How many zeros are in one billion. 

Amazing Race- Tuesday

Tuesday:         Europe Eureka!

You travel to the Black Forest in Germany (also known as the Forest of GeomeTREE pronounced Geeh! I’m a tree! ) and meet a magical elf who will only give you the next clue if you can solve his riddles.

He gives you ten seconds to guess…

 

1.      10, 9, 8, 7, 6...what are the next three numbers in order?

 

2.      What shape has eight sides?

 

3.      How many sides does a pentagon have?

 

4.      How many corners does a circle have?

 

The magical elf gives you your next clue, ‘Go to the second floor of the Eiffel Tower in Paris, France’.

 

5.      The Eiffel Tower is painted every 7 years to protect it from rusting.

          How many times will it need to be painted in 28 years?

 

6.      There are 704 steps to the second floor of the Eiffel Tower.  You climb 500 steps before stopping for a break.

How many more steps do you   need to climb?

You get your next clue and travel to London, England and wait outside the Big Ben clock tower for the Queen.  

7.      You arrive at 9:00am, the Queen will not be arriving until 11:00am.  How many hours will you have to wait?

8.      While you wait you hear Big Ben’s quarter bells chime. They chime every fifteen minutes.  How many times would you hear them in one hour?

9.      At 11:21am the Queen arrives.

          She is with 25 guards and 25 servants. How many people arrive     with the Queen?

 

10.    How many tens are in fifty?