Major New Parameters Command

The latest versions of FX Draw and FX Equation have added an IF command. This represents a major increase in the power of the parameters system and allows authors to create significantly more powerful MultiDocs.

An example If command might look like this…

{if($d=0,”Cannot divide by zero”,$n/$d)}

If you included this command in a question, the inline calculator will look:

  • Look at the value of the $d parameter
  • If $d is zero, the command will add the words “Cannot divide by zero” to your equation.
  • If $d is not zero, the command will divide the value of the $n parameter by $d and output the answer.

In addition to the new IF command, we have added a number of other Boolean commands that make it easy to write conditions for IF commands. These include:

  • And
  • Or
  • Xor
  • Nor
  • Not
  • IsEven
  • IsOdd
  • IsInteger
  • IsComposite
  • IsPrime
  • IsFactor
  • IsNatural
  • IsCube
  • IsSquare

The new IF command is available for use now but we anticipate that its power will allow us to add a variety of new features. Keep an eye out!

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Creating Your First Parametized Question

Efofex Parameters have been available to users for a few months now. Some users are doing absolutely amazing things with them including one user who is creating documents that can provide both Greek and English versions of the same questions. We have been constantly adding new capabilities as we experiment with parameters. For example, we recently added a feature which will write the value of a parameter in English text (so it turns “31” into “thirty one”) so numbers can be included directly in the text of your questions.

Users have been using FX Library to see some of the things that are possible but we have started to hear people ask “This all looks great, how do I start?” To address this, we have published a new video where we look at turning an existing test question, written in Word, into a fully parametized question.

If you are interested in creating at MultiDocs, take a look at the new video!

Creating Your First Parametized Question

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New Help System

We have recently improved access to our Help resources by restructuring the Help menu in our products. We have provided a little more information but, more importantly, have made the existing information much more accessible. Take a look after your next update.

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Zoom And Teams FX Draw Training – Free Sessions Available

Being based in Western Australia in a COVID affected world has greatly limited the amount of professional development training we have been able to offer. We are currently working on developing Zoom and Microsoft Teams based training to address this shortfall.

To complete our development, we would like to offer some free, one hour training sessions so we can polish our processes. The free sessions are limited to Australian schools (to minimize time zone issues) and will be provided on a first come, first served basis.

So if you need to fill a training slot in the next few weeks, contact us to see if you can access some free training. The slots will fill quickly so don’t delay.

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New Statistical Graphing Option (Particularly Useful for NSW)

Grouped data graphs (histograms, frequency polygons and cumulative frequency graphs) now have the option of placing the class centres in the axes. This is particularly useful for NSW teachers who seem to prefer this option.

You can turn on class centre scales in the options for the affected graph types.

Long term users of our products will know that we previously had a version of this mode of graphing (it was called Use Alternative Axes). The new system is massively improved and allows you to combine cumulative frequency curves with other graphs.

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New FX Library Upload

We have just uploaded a number of new FX Library MultiDocs including a nice little right angle trigonometry investigation.

Measuring Heights & Depths Investigation

This investigation looks at calculating the heights and depths of inaccessible objects.

The validation section of the investigation has been parametized to allow multiple versions to be produced.

FX Library MultiDocs provide you with prewritten materials that you can use as-is or you can use the MultiDocs features to generate new versions at will. They also provide exemplars on how to create your own MultiDocs. We recommend that you keep an eye on FX Library by pushing the Library button on our new Word toolbar.

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New Dial Tools For FX Draw

The latest version of FX Draw adds three new tools that allow you to create diagrams like this.

The three new tools are:

  • A circular dial – in the circle tools.
  • An arc dial – in the arc tools.
  • Dial hands – in the line tools.

The dials are highly customizable – just right click.

This feature was the direct suggestion of one of our users. Thanks Christine!

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New Scale Options For Graphs

The latest versions of our graphing products (FX Draw, FX Graph and FX Stat) now include more formats for scales.

Existing Styles

Our graphing products have always been able to mark axes in terms of pi.

You also can (automatically) use degrees.

New Styles

Currency, fixed decimals, percentages and scientific notation are now all possible.

Controlling The New Options

You can select the new scale types on the Scales tab.

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New Probability Questions in FX Library

We recently uploaded some new probability questions to FX Library, and the development of one of them is indicative of the power of Efofex Parameters.

It all started when we developed a simple tree diagram question about different coloured socks in a box. It is exactly the standard sort of question that is perfect for MultiDocs as a push of a button produces one of the 400 available variations.

You can find this document in FX Library or through this direct link.

Something Interesting

A basic rule of developing MultiDocs is “Regenerate, Regenerate, Regenerate”. Regenerating quickly shows up flaws in the question design and is a crucial tool to developing these questions. As we regenerated this question, we noticed something unexpected – the answers were much more likely to be one side of 0.5 than the other. We have often found this while developing MultiDocs – the process of designing questions that can self modify can lead to a much deeper understanding of the topics.

In this case, that deeper understanding lead to the development of an interesting investigative activity which starts like this.

There is actually quite a lot of mathematics going on behind this with a few interesting results!

You can find this activity in FX Library or using this direct link. As with all FX Library materials, subscribers can use the documents in their teaching with almost no copyright concerns.

FX Library is a growing library of materials that you can use directly in your teaching or as a source of exemplars for your own questions.

Visit FX Library

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Introducing FX Library

MultiDocs are a new, incredibly powerful way to use Efofex products but they can be challenging to write. FX Library is a collection of pre-written MultiDocs that you can use in two ways.

  • As a subscriber, you can download documents from the library and use them immediately, either as standalone documents or copying questions from the documents into your own materials.
  • You can also use FX Library documents as exemplars on how to write questions with Efofex Parameters.

When you visit FX Library, you will see the following:

The FX Library Screen
  1. Search the database of documents using key words.
  2. Take note of the number of variations available for that document. These range from 1 (for documents which do not include parameters) up to 100 000. Actually, many documents have literally billions of variations available – we just set the maximum at 100 000.
  3. When you select a line in the database, the page will load the document into a viewing window.
  4. If you are happy with the document, download it to your computer and start using it.

Accessing FX Library

The easiest way to access FX Library is from the Word toolbar. This will take you directly to the page on our site. You can also visit it here.

The FX Library Button


Subscribers can use the materials in FX Library with almost no restrictions. You can find more information here.

The Future

At the moment, FX Library contains about 60 documents. These make great exemplars so you can see just how to use Efofex parameters. Over time, the number of documents will expand greatly and our goal is to make FX Library a comprehensive source of mathematical materials that you can use to create your own, incredibly versatile MultiDocs

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