Friday, March 18, 2011

Maths Swap (Knowledge)

ADD AND SUBTRACT (+, -)



Start with the basics!  Learn to count, build, fill and add with frames of 5.



Here's a great little program for counting, building, filling and adding with frames of 10.




How fast can you answer these questions? 



Practise adding and subtracting in this timed challenge!  




Input the centre number and away you go!




READ, WRITE AND COUNT


The ultimate skip counting machine!



NUMBER SEQUENCES
Practise your skip counting!



Flip up a tab and check the number.  Can you skip count in tens?



COUNTER
Skip count forwards and backwards in different steps.  Watch out, it's fast!




DOUBLES AND HALVES


Practise doubling and halving numbers with these great activities.  
  1. Fractions, decimals and percentages: 50%, 0.5, 1/2
  2. Fractions: 1/2
  3. Multiplication: × 2



Build a bridge by answering the doubles correctly.  But lookout if you get it wrong!




Turn it up!  On second thoughts...




Use the tens and ones abacus to help you when doubling or halving these numbers.


  
Double these large numbers by doubling tens and ones separately.



A more advanced challenge of doubling and halving.



"The meal deals are half price.  How much would a salad meal deal cost?"




MULTIPLICATION AND DIVISION (×, ÷)


Enter the times table you would like to focus on and have fun!



The ULTIMATE basic facts trainer!




RECALL, KNOW AND CONVERT P.V.



Use the tens and ones to build two digit numbers.



These blocks are a lot of fun:
  1. Make the number.
  2. Watch as blocks are grouped and converted.
  3. Read the number in words.
  4. Listen to the number.



Wow, this is pretty cool!  Convert 10 tens into 1 hundred...



'Can you identify the number shown?'  Click 'Regroup' and enjoy!




Watch out, there are sharks about!



Drag and drop the blocks in this fun little activity.




What number is represented with the hundreds, tens and ones blocks?




Click the button to drop new blocks.  The total is recorded for you.  



Use this applet to see how many tens are in 100 etc.  



Practise identifying numbers represented with base 10 blocks.  



Follow the instructions and learn all about place value and multiplying and dividing by 10...




More fun with blocks!
  1. Build the number.
  2. Watch as blocks are converted.
  3. Read the number in written form.
  4. Listen to the number read to you.




MORE PLACE VALUE



MAKE THE NUMBER...
Select the tens and ones needed to make 46.




Play around with place value and decimal numbers.  It's easier than you think!




ABACUS
Play with an ancient calculator!  How does it work?  Oh, it's so technical.




Drag numbers to the correct places on the place value chart.  Can you complete the challenge successfully?



Here's a tricky game.  It only uses the digits 0 and 1 but it's harder than you'd think.



Order fractions from the lowest number to the highest number.



From easy to difficult.






Practise reading written numbers.  

Have a go at answering these word problems.  Challenge yourself!




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