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Posts

July 30, 2014

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9:02 AM | GeoGebra with 3D View
As you may know we have been working on adding the 3D View to GeoGebra for a long time now. It’s been a much longer journey than we first imagined. In particular since 2008, the need has arisen to have … Continue reading →

July 27, 2014

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3:02 AM | The beauty I see in algebra: Margot Gerritsen at TEDxStanford
Professor Margot Gerritsen explains solving equations using matrices. Not a technical talk, but rather gives some examples of the problems that can be solved with matrices.
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2:37 AM | Null Cipher Code
Deane shows how to use a simple code to send secret messages.

July 26, 2014

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12:05 PM | GECKOS
Growing Enriched Cultural Knowledge in Our Schools The GECKOS website has been created to provide teachers with information, ideas, activities and resources to support them in the meaningful integration of Aboriginal perspectives in the school curriculum. Follow navigation Secondary for Mathematics and Early Years for Numeracy.
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9:24 AM | Design a park
Design a site plan for a park and learn about fractions at the same time. Select sections on a grid as places for things such as picnic tables, swings, sandpits and ponds. Explore several different ways of expressing fractions and displaying them, such as using a number line or colour on a grid. The Alternate Link is available without Scootle access from ABC Splash.
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8:59 AM | Wishball challenge: hundredths
Challenge your understanding of decimal place value with numbers that include hundredths. Get a starting number, such as 46.87, and work towards turning it into a target number, such as 85.32. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting number. Don't overshoot the target! You can use a 'Wishball' to help you reach the target number. Try to achieve the target with as few additions or subtractions as […]
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8:57 AM | Wishball challenge: tenths
How can you challenge your understanding of decimal place value with numbers that include tenths? Try this. Receive a starting number, such as 128.9, and work towards turning it into a target number, such as 845.6. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting number. Be careful not to overshoot the target! You can use a 'Wishball' to help you reach the target number. Try to achieve the target with as few […]
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8:54 AM | Wishball challenge: whole numbers
Challenge your understanding of decimal place value with 4-digit whole numbers. Receive a starting number, such as 3786, and work towards turning it into a target number, 7664. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting number. Don't overshoot the target! You can use a 'Wishball' to help you reach the target number. Try to achieve the target with as few additions or subtractions as possible.
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8:51 AM | Wishball: ultimate
Want to really test your understanding of decimal place value with whole numbers or numbers that include tenths, hundredths or thousandths? Receive a starting number, such as 3569, 356.9, 35.69 or 3.569, and work towards turning it into a target number, such as 7832, 783.2, 78.32 or 7.832. Spin a random digit, choose its decimal place value and decide whether to add or subtract the random digit from your starting number. You can use a 'Wishball' to help you reach the target number. Try to […]
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5:44 AM | How do you round numbers to the nearest 10?
Sometimes it's helpful to use rounding to estimate a calculation, instead of working out the precise answer. Here's how to round to the nearest 10. BBC, ' How do you round numbers to the nearest 10?', ABC Splash
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1:51 AM | The Mandelbrot Set
Famously beautiful, the Mandelbrot Set is all about complex numbers. Featuring Dr Holly Krieger from MIT.

July 25, 2014

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4:11 PM | CanvasLMS
...If this is your first time, come a few minutes earlier to check out the technology. The room opens half an hour before the event. About Canvas ... sure helps. Instructure Instructure Inc. is... Wasatch mountains. Event Hosts ... hallway testing. Brian has spent the last three years managing development of the Canvas product. His experience in usability has been integral to understanding the needs of students and educators, and in developing a product that is both intuitive and […]
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4:04 PM | John Sharp
No summary available for this post.

July 24, 2014

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9:43 AM | Zeno’s Paradox - Numberphile
How can an infinite process end? An explanation helpful for geometric series and limiting sums

July 21, 2014

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9:04 PM | Switch up your research routine!
If you’ve ever worked out, you know that your body can get comfortable doing a particular exercise and then no longer feel challenged. In order for you to continue to transform your physique and train other muscles, you have to … Continue reading →
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8:31 PM | the exterior angle is greater than either of the non adjacent interior angles geometric proof
newest proof
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7:50 PM | the exterior angle is greater than either of the non adjacent interior angles
updated proposition
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7:27 PM | opposite angles on intersecting straight lines geometric proof
newest proof
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7:13 PM | opposite angles on intersecting straight lines
newest proposition

July 20, 2014

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11:43 PM | Spin Dryer
How does a spin dryer work? Deane explains with a simple model made from buckets and a hand beater. An example for circular motion.
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9:31 AM | Data Displayer
The Data Displayer provides interactive tools to investigate sets of data. Explore data questions on sports (baseball home runs), movies (highest paid actors), agriculture or enter custom data. Analysis and representation tools include mean, median & mode; box-and-whisker plot; scatterplot with line of best fit; standard deviation and mean. Includes a Teacher's Guide.
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9:09 AM | PhysicsToGo
Designed for use on a tablet. This page includes a working accelerometer (on a tablet) and some interactives for investigating forces.

July 19, 2014

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4:43 AM | Incorrect Graph - Asthma Breakthrough
A picture graph from a news story that gets the ratio/number of pictures wrong. The link takes you to an image file. Source, see Alternative Link.
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4:29 AM | Incorrect Graph - Ethical dilemmas, Channel 7
A pie graph from a news story that gets the size of the sectors wrong. The link takes you to an image file. Source, see Alternative Link.
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4:24 AM | Catalog of Some Elementary Functions
This Demonstration presents a catalog of some elementary functions that can be used to illustrate how each of the parent functions can be transformed by varying different parameters.
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