# Resources by The Virtual Textbook

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### Area and Perimeter

This resource consists of two interactive excel files.

Area and Perimeter: Algebraic, Rectangles
The first two sheets...

### Arithmetic Series

This series of interactive excel sheets look at arithmetic series and progressions.

The first sheet gives examples of arithmetic sequences, of which the value of a further term in the sequence, the first term and the...

### aSin(x) + bcos(x)

This group of interactive excel worksheets look at the series of identities of the form

aSin(x) ± bCos(x) and aCos(x) ± bSin(x),

where a=RCos(α), b = RSin(α), R=√(a...

### Averages and Moving Averages

This resource contains two excel files dealing with measures of central tendency, trend and spread for sets of discrete data.

Averages and...

### Basic Trigonometry

This resource contains two interactive excel files dealing with trigonometry in right angled triangles. Each interactive file has the same further 13 sheets of questions which may be suitable for use in the classroom.

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### Bearings

This interactive excel file begins with a sheet showing a compass rose to help students estimate the bearing of the direction shown. The next sheets allow students to estimate bearings between points shown on a coordinate grid. To calculate the bearings students would...

### Bodmas and Bidmas

This excel file has four interactive sheets dealing with the order of operations. The first shows groups of calculations involving addition, subtraction and multiplication where the answers can be revealed. The second interactive sheet is similar, but it deals with...

### Box and Whisker

The first sheet of this excel file shows a box and whisker diagram where the defining points can be altered. The second sheet shows two box and whisker diagrams to allow comparison between distributions. The next sheet shows a box and whisker diagram for students to...

### Brackets

This resource contains two excel programs; ‘Removing and Collecting Like Terms’ and ‘Multiplying Out and Simplifying’, each containing a series of interactive spreadsheets designed to explore how to deal with brackets.

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### Calculator

This excel file has large displays of two Casio calculators which could be useful for class discussion. The first interactive sheet shows sets of calculations which require the use of functions including x2, √ and π. The second interactive sheet shows sets of more...