An interactive geogebra applet that allows the teacher (or students on ipads/in computer room if uploaded onto geogebra website) to create right angle triangles using a set number of standard squares. Students can record their trials and try to spot any relationships between the size of the squares that work. An accompanying worksheet and lesson plan to match. You need geogebra installed (free) or use the web applet that does not require geogebra to be installed.

An interactive geogebra applet that allows the teacher to plot any function and dynamically reveal the volume of revolution around the x-axis. It calculated the area and volume also. You either need geogebra installed on your machine or use the web link to use the resource within a web browser without the need to install geogebra.

An interactive geogebra applet that creates and solves two sets of linear simultaneous equations dynamically. Drag the vertical slider to reveal the working. Also shows the graphical significance of the solution in an additional window. You must have geogebra installed on your machine or use the web link to use this without needing geogebra to be installed.

An interactive PowerPoint that models how the rate of change changes over time in the context of filling containers with water. Select the container set and fill them up using the control buttons to show their corresponding graphs.

An interactive PowerPoint and worksheets that model how to complete/create patterns with rotation symmetry using tracing paper. Using the navigation buttons...1)Select the example, 2)Show the tracing paper, 3)Trace the design, 4)Rotate the tracing paper to find the missing parts of the design.

An interactive PowerPoint that simulates various simultaneous events by systematically listing.

An interactive PowerPoint that uses prime factor trees and Venn diagrams to model how to calculate the LCM and HCF. Uncover the end branches by clicking on the covers, click on the end branches to select the prime factors, show the Venn diagram and click on the selected factors to place them in the Venn diagram.

An interactive PowerPoint that uses partitioning (as with numerical multiplication) to expand the product of two linear brackets. Also includes some simple factorising where you can drag-and-drop the correct factors (must enable macros). Click on show/hide to reveal the grid, click on the factors in the brackets in input these into the grid and unhide the expansion by clicking on the covers.

A set of interactive examples that model how to create a prime factorisation using factor trees. Click on the number in the tree to shown the next level/branches and click the empty branches to reveal the factors. Once the tree have been fully revealed, click on the end branches to show the prime factorisation.

A fully interactive presentation that models how to identify and check for rotation symmetry using tracing paper. Use the navigation buttons to....1)Navigate throught the examples, 2)Select tracing paper 3)Trace 4) Rotate.

An interactive and dynamic PowerPoint that models how to add and subtract fractions using pictures. Use the 'fraction' buttons to show the visual representation of each fraction and click on each sector to shade it in. Click on 'add/subtract' once to reveal the common denominator shape and again to visually see the fractions adding together.

A PowerPoint modelling how to construct a triangle given two angles and a side length.

A PowerPoint modelling how to construct a triangle given two side lengths and one angle. Includes non-unique triangles (SSA).

A presentation demonstrating how to construct a triangle given all three sides.

Models how to find the area of a parallelogram by linking it to the area of a rectangle. Fully dynamic and interactive examples.

Models how to find the area of a triangle by converting it into a parallelogram. Fully interactive and dynamic examples.

An interactive PowerPoint that models how to calculate the area of a trapezium by dynamically converting it into a parallelogram.

An interactive PowerPoint that models the three views of a 3D object. Use the navigation buttons to scroll through the examples and use the plan, side and front buttons to show the object rotate into the correct position. Before revealing, invite students to the board and ask them what the views might look like by clicking on the square grid. I have attached some questions also.

An interactive PowerPoint to model solving quadratic and cubic equations using trial and improvement. Use the +/- buttons on each row to change the input and click on the x number shown to watch it dynamically substitute. Click on the blank parts of the table to reveal the substituted parts evaluated. Using the +/- button on the next row, modify the input and substitute again by clicking on the number shown and repeat the process. If more table is needed, click clear.

Starts by finding LCMs and HCFs by listing and extends to using prime factors and Venn diagrams to calculate LCMs and HCFs. Scroll through the PowerPoint using the navigation buttons. Reveal the covered factor trees by clicking on the covers and click the end branches of each tree to select the prime factors. Once all end (prime) numbers have been found use the show/hide button to reveal the Venn diagram. Click on the prime factors again to place them into the Venn diagram. Click on the LCM or HCF to reveal the answers.