Image from the National Library of Virtual Manipulatives: Fractions, Ratio and Percentages. (NLVM site)
Multiplying and dividing by powers of 10 (10, 100, 1000, etc) is an important skill that will help you to work out decimals, percentages and converting measurements. You can use a number slider to work out the problems here.
Here are the rules for converting fractions to decimals and percentages. Try the BBC Skillwise Fractions, Decimals and Percentages game. A video on how to change fractions and decimals to percentages here. Some more interactive maths games about fractions, decimals and percentages.
Congratulations to all those students who were nominated and selected as mentors and administrators for this year. Mrs Murnane, Mrs O’Connor and I are very proud that you are all prepared to take on the extra responsibilities that your new roles will entail. Congratulations also to all those students who participated in activities on the Roses Gap Adventure camp last week, especially those that worked as a team and were encouraging their group members to achieve their best.
This week in maths we will continue to develop our understadning of decimal numbers. Those that completed the activity ‘Comparing Decimals’ with ease last week will go onto performing operations with decimals – visit BBC – KS3 Bitesize: Maths – Decimal Activities and complete the activites and the quick test. (Just treat the English pound symbols as dollars!). Save the score page to show me, so I can check your work. For more on adding and subtracting decimals you can use the National Library of Virtual Manipulatives Base Block Decimals. Use the Decifractator to convert fractions to decimals. Use the decimal number line to visualise the numbers in between.
More decimal activities can be found at FUSE. Type in the following codes for each activity:
Scale Matters: decimal numbers – YDWE83
Wishball: hundredths – 225PL8
Gamequarium: Decimal Games – 24PTEG
The students that had some difficulty in comparing the size of decimal numbers will work with me to improve their understanding using some computer games and a dice game called “Crocodiles and Sharks”.
Before the end of term I hope to start a short unit on percentages – please save all those advertising catalouges with sale prices advertised, so we can use them in class.
So far this year in Year 6/7 we have been studying positive and negative whole numbers – including factors, multiples and prime numbers. Next we are starting to look at numbers between zero and one or how we express the numbers in between whole numbers. We will be doing a short diagnostic test from the University of Melbourne “Teaching and Learning about Decimals” that compares the size of two different decimal numbers. The site above has many different activities using fractions, decimals and percentages.
In Science we have started with the Safety Rules and Equipment in the laboratory. We have performed some simple experiments, including measuring the rate of heating and cooling water. Now we are studying the states of matter – solids, liquids and gases – and the particle model. We have created our own mini-water cycle and created posters to show evaporation, condensation, precipitation, erosion, transpiration and aquifers.
My American colleague, Mrs Laguna, is also a member of Quia, where you can create any of thirteen different activities (from battleship to scavenger hunts), as well as quizzes and surveys. As well as creating your own activities, as a member you can browse the activites of other teachers.
Here are a few for my year 9 Science class to try:
Electricity and Magnetism – Who want to be a Millionaire?
And for year 7 Maths (decimals, fractions and percentages):
Ordering decimals and Ordering decimals 2.0
Fraction to decimal conversions