Explore Maths & Science

Below you will find some web sites that provide a great resource for exploring maths.  Click on the links and jump into some practice or simply explore what you are interested in. 

Maths: 
When we are learning strategies for addition and subtraction we aim to use number knowledge to help solve a problem.  Here is such an example. A student is showing how to use doubles to solve an addition problem.

One comment to come out of the  student led conference was about maths.  It is difficult at home,  to grasp what strategies are used in the classroom.   I have put together some information to hopefully explain about multiplication and division strategies. 
 
 
Math Stage 4: Key Ideas

Strategies in stage four are based on transformations to factors that leave the product (answer), unchanged.

»     12 x 27 can be worked out as:  2 x 2 x (3 x 27)

»     Splitting 12 into 2 x 2 x 3 leaves the product unchanged.



Important strategies include:

»     Using tidy numbers, breaking numbers apart and using them differently

6 x 12 = (6 x 20) – (6 x 2) = 120 – 12 = 108

or,   76 ÷ 4 using (80 ÷ 4) – (4 ÷ 4) = 20 – 1 = 19


»     Place Value: 

28 x 7 as (20 x 7) + (8 x 7) = 140 + 56 = 196

or,  72 ÷ 4 as (40 ÷ 4) + (32 ÷ 4) = 10 + 8 = 18


»     Using reversing; changing the order

Reversing:  96 ÷ 6   as    6 x ☐ = 96 
Changing order:   17 x ☐ = 102    as    ☐ x 17 = 102
 
»     Using association (proportional adjustment)

Doubling and halving:    4 x 18   as   8 x 9

Halving both numbers:   216 ÷ 12,  as   108 ÷ 6,   as   54 ÷ 3 = 18


»     Interpreting division remainders in meaningful contexts

78 students travel by bus.  Each bus holds 48 students.  How many buses are needed?    78 ÷ 48 = 1 r38.  This means that two buses are needed.



The preference when students are writing the equations out, is that they break down the problems and record them in meaningful chunks.


 A student explaining the use of a doubles strategy.

 
  • Studyladder
  • Skoolboo
  • Place Value - this is popular with the kids
  • Johnnie's Math Page
  • Khanacademy -  once the pages opens find the link which says "Subjects" and click on this.  The link will give you drop down menu and from there you can explore a whole variety of knowledge and skills.
  • Fraction Matcher
  • Here is a fun video about fractions. It is a little advanced but it is a little fun rap about changing an improper fraction to a mixed number fraction.
  Understanding Fractions

 This little video (approximately 5 minutes long, from Khanacademy) helps with the basic understanding of fractions.




Representing 1 Whole
  

Whole Numbers on a Number line
 


 Fractions on a number line


Comparing Fractions






Measuring with a Centimeter ruler.

 

Science:

1 comment:

  1. Unknown17 March 2016 at 04:09

    What an awesome blog Room 11 and Mr Bowron. Well done.

    ReplyDelete

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