Subtraction..... taking away.....

More videos on subtrcation

http://www.youtube.com/watch?v=18nthFexzBc

http://www.youtube.com/watch?v=wX7tbkTW6Ys

Games on Subtraction

http://www.ictgames.com/soccer_subtraction.html In this direct free kick you must read the number sentence on the Brazil team shirts, then take away the correct number of players in the wall. Then click on the England player to score. Unusually, if you miss, Brazil gain a goal!

http://www.sums.co.uk/playground/c1a/playground.htm (Click on continue to start. Then click on easy to begin. Click on the number which is the answer to the question)

http://www.amblesideprimary.com/ambleweb/mentalmaths/subtractiontest.html (Click on level 1. The other levels are beyond 10)

http://www.bbc.co.uk/schools/laac/numbers/ch2.shtml (Interesting game that uses dots on a ladybird to find the answer. It also test the missing number in a question)

http://www.primarygames.com/takeaway/question%201.htm (Good mental sum on subtraction)

http://www.scweb4free.com/subtraction010.htm (A RACE to complete as many questions as possible correctly)

http://www.scweb4free.com/elemsub.html (good to test on the concept that bigger numbers take away smaller numbers)

Subtraction Websites

Here are some websites about subtraction:

http://www.sesamestreet.org/video_player?p_p_lifecycle=0&p_p_id=videoPlayer_WAR_sesameportlets4369&p_p_uid=218710e0-6d3e-4db2-a0d2-e8529d39a277 (song about subtraction)

http://www.youtube.com/watch?v=y223gPkk_lI&feature=PlayList&p=DFE16D3AA9E50A4C&playnext=1&index=36 (10-8 = 2 It gives an idea that subtraction is about taking away)

http://www.youtube.com/watch?v=Bzw3VxHqwbk&feature=PlayList&p=B477403E232DF6F3&playnext=1&index=24

http://www.youtube.com/watch?v=WfsSX1u8MUU (Idea of subtractionas taking away)

If case you are wondering how to teach subtraction, let this video give you some idea. In class, we use our fingers since it is within 10. Pupils also draw lines instead of circles if they are unable to use their fingers.

http://www.youtube.com/watch?v=4s5FaFzPK4c

More on Addition

Games to reinforce concepts. For now we are learning numbers with answers within 10

http://www.innovamultimedia.com/demos/en/ma01/ma01d001/ma01d001_index.html

http://www.abcya.com/addition.htm (comes with online counters that you can use to check answer)

http://www.ictgames.com/funkymum.html (be warned that it is up to 10 +10. So you may expect bigger numbers)

http://www.amblesideprimary.com/ambleweb/mentalmaths/additiontest.html (Click on level 1 if bigger numbers appear)

http://www.oswego.org/ocsd-web/games/ghostblasters2/gb2nores.html (change to sum of 10)

Higer Order Addition : http://www.oswego.org/ocsd-web/games/Powerlines/powerlines1.html

Models (Updated with more websites)

Here are some websites for our P2 pupils. This post serves as an insight into models.

http://www.teach-kids-math-by-model-method.com/ (Click on the links that you want to read. I like this site because it has comprehensive information about models.)

http://www.thesingaporemaths.com/Whymodf.swf

Although the website below deals with P3 questions, it gives us an idea of what is a model and how to draw models. http://www.thesingaporemaths.com/p3math1f.swf

http://www.europa.com/~paulg/mathmodels/math_models.shtml (Go basic operations, click on addition & subtraction to see model animation)

http://sc-math.com/math/model.php#t1 (There are 3 pages to view)

Addition Videos (P1)

Do watch these videos on addition

http://www.youtube.com/watch?v=62tnBUDN9X0
http://www.youtube.com/watch?v=e8pB9zB2wUM (more than)
http://www.youtube.com/watch?v=uKD148lpBAE&feature=related
http://www.youtube.com/watch?v=YKGSJhexuGQ (sound quality a bit bad)

How to teach pupils addition stories :
http://www.youtube.com/watch?v=1nN1DqwS0q4&feature=related

Do look out for more videos and games on Wednesday

World Math Day

Dear Parents, I am sure that you have received the World Maths Day letter and username and password. I hope you are enjoying it. Any questions do drop me a mail.
Here is the link to the website: www.worldmathday.com

More Number Bond games

More online activties for you.

http://www.ictgames.com/save_the_whale_v4.html (you can choose from 1-10 number bond. Move the arrow you see near 10 to change the number.)

http://www.ictgames.com/brilliant_beadstring_with_colour.html (use the one row of beads to make 10. You can use up to 3 different colours depending on how many parts you want. Use the eye to cover part of it. You can ask your child 3 and ___ make 10. Then your child can check by adding in the beads.)

http://www.ictgames.com/beaver.html (Make number bonds to 10. Use the hammer to hit 2 numbers that make 10)

http://www.coolmath-games.com/0-number-twins/index.html (Making number bonds from 4-10. Really interesting. Click on the 2 numbers that make each number bond)

Multiplication & Division

Here are some links to practise on Multiplication & Division

http://www.bbc.co.uk/schools/ks1bitesize/numeracy/multiplication/index.shtml
http://www.multiplication.com/flashgames/MonsterMath.htm
http://www.multiplication.com/flashgames/JungleJim.htm
http://www.multiplication.com/flashgames/Monkeys.htm

Shots of P2

We started on Multiplication & Division. Here are our photos showing us working.

Shots of P1

Here the shots of our P1 lessons.

Reinforcing our ‘more than’ & ‘less than’ concept

Us working on our number bonds. The various stages.


we were using 2 different colour cubes to make our number bonds.

How to teach Number Bonds

From the previous post (Number Bonds), you would have realised that Number Bonds help pupils relate addition & subtraction. It helps pupils relate to part(a) + part(b) = whole or whole-part(a) = part(b) or vice versa.

If you have attended our P1 Parents Maths @ Home workshop on Friday, we would have shared with you strategies and manipulatives that you can make @ home. However if you did not attend the workshop, let me share with you some of the strategies. I will try my best to write it as short and and as easy as possible. However, if you are unable to understand it, do give me a call and I can demo to you.

1 manipulative that you can use @ home is Hangers & Clothes Peg. Refer to the picture below.

You need

clothes peg (2 different colours if possible)

hangers

flashcards with numbers

Think of a 2 numbers that would give a sum within 10. For instance 2 and 5 makes_______.

Ask your child to clip the pegs on the 2 ends. Each part represents 1 number.

Move the 2 parts up to the clown face(pupils have been told that whole is head and the 2 parts are like hands) and now they have 7 pegs.

Put the whole number in the clown face(7).

To teach whole-part= part

Put the the pegs in the whole part(7) and then tell the child that 1 part is 4 and ask what is the other part. You can use flashcards to show the known part(4).

Pupils move 4 pegs to the known part. There are 3 pegs left in the whole and they can see that the unknown part is 3.

Practise this a few times.

Next introduce to them the sentence/diagram where the whole and 1 part is given and they have to find the missing part.

Instead of hangers, you can use 2 different coloured cups/bowls to show the whole is made of part & part. 1 colour(eg: red) for the whole and for the parts(eg: blue).

Tips:

Show a number bond and ask pupils to identify the whole and parts. Use different shapes and rotate the number bonds around. Look at the examples below.

Teach the pupils that part and part makes whole first.

When and only when they are comfortable with it that you lead them to whole-part=part. Let them practise it.

Parents, if any problems helping your child with Numbver Bonds, do drop me a note and we shall

work together.

Thank You.

Powerpoint Slides

Actually, I am trying to upload the powerpoint slides from my lessons but I have problems trying to upload it.
Any one has any ideas how to upload?
Thanks in advance.

Number Bond Machines that you can use to Practise the concepts

Here are links to 2 sites that you can use to practise Number Bonds

http://www.amblesideprimary.com/ambleweb/mentalmaths/numberbond.html (P2 parents the numbers to 100 game to practise addition)

http://www.primaryresources.co.uk/maths/powerpoint/numberbonds_to10.swf (introduces the concept that number bonds is related to addition & subtraction)

http://www.primaryresources.co.uk/maths/powerpoint/pairs_that_make_10.swf (mental sum on numbers that make 10)



Parents who need help with how to guide the little ones with number bonds, please give me the weekend to add in the post on the How to. Thanks)

Number Bonds

Dear P1 parents, we have started on number bonds. Here are 2 articles that I though was interesting and related to Number Bonds. It gives insight to what is number bond.

http://home-ed.info/maths/number_bonds.html
http://www.ehomework.co.uk/NumbersNumberBonds.html

You can also head to Cybersource to print this workseet to practise http://cybersource.com.sg/filedb/uploads/P1-2_1_Number%20Bonds.pdf

Over the weekend, I will share strategies that can be used to taech number bonds

Apologies

Dear parents, sorry that I have not be updating the blog. Have been a little busy. Will upload the photos and related websites to topics by this weekend on number bonds for P1 and multiplication & division for P2s.
Thank you for your support.

P1 pupils in action

Shots of our lessons in Week 4 & 5.

Greater or Smaller Number

Bigger or smaller number.... So many ways to test our concept knowledge

Part of lesson on arranging numbers

More than---- less than

Us practising our 'Before after' concept on the Math Challenge Mat.(We have finished our task)


Actually we did this and more but I forgot to take photos and on some days the camera battery went flat before the lesson. Anyway, I hope this photos provide a prelude of our lessons this week.

P2 lessons in photos

Here are the P2 pupils in action

Hands on practice (Concrete)

Interactive parctice

We have finished our work so we practice on the PC

Arranging Numbers

Often this is a difficult concept as there are are 3-4 numbers at anyone time and pupils get confused. One way to make sure that pupils are sure of the smallest/biggest number.

For instance, for the question on arranging the numbers from the smallest to biggest,
1)Ask the pupils to read the question.
2) Ask them to ask themselves which is the smallest number. Each time they write a number down, cancel the number.
3) Then ask them to ask, which is the smallest number now and repeate the process in step 2.

Arranging numbers from the Smallest to Greatest
1) Use a rhyme like 10 Little Indian Boys http://www.youtube.com/watch?v=5IO24dCmxk0
2)Ask pupils to arrange the numbers from the smallest as they sing the song.

Arranging the numbers from the Greatest to smallest
1) A video from http://www.youtube.com/watch?v=Z1sCuNEZkCE enables pupils to see the numbers becoming smaller.
2) Pupils were also taught to sing using their fingers and to fold them as the number decreases.
3) Pupils count the numbers backward as they arrange the number.

Ask your child for a demo. I am sure they remember their lesson learnt on Friday

Meanwhile do practice. These websites are a great source.

http://www.ictgames.com/caterpillar_slider.html

http://www.primaryresources.co.uk/online/numorder.swf
Have fun!

Greater or Smaller Number

Key Words:
Greater than
Smaller than
greatest
smallest

1) Take 2 beansticks and ask pupil which stick has the greater/smaller number
2) Take more than 2 sticks and pupil to say which stick has the biggest/smallest number

Pupils can practise their concepts on this website:
http://numbernut.com/basic/activities/number_moreless_1-10dots.shtml (it would be good if pupils say the sentence orally)

Compare the Numbers(2)

More activties to practise 'more' & 'fewer'

1) Take 2 beansticks and ask the child which stick has more beans or which stick has fewer beans.
Do visit these sites so that your child can practise the concepts.
http://www.mrsbogucki.com/aemes/resource/apps/compare/compare.htm (You can customise the settings to suit the needs of your child)

http://www.ixl.com/math/practice/kindergarten-fewer-more-comparing-groups