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Pie Charts

This animation from Subtangent shows students how to read, draw and interpret pie charts as well as highlighting when not to use them.

Students are shown how data, from a frequency table, is converted into a pie chart and clear guidelines for drawing and labelling the charts is given.

There is a...

Frequency Diagrams 1

This activity from Subtangent reviews frequency diagrams and includes examples of histograms, frequency polygons and stem and leaf diagrams.

Thorough descriptions of how to create a grouped frequency table and the details of the construction of the axes for histograms are included.

The advantage of...

Random Trig

This activity from Subtangent generates an endless sequence of trigonometry problems in right angled triangles.

Students can choose to focus on finding a missing side, angle or allow a random selection of questions.

The answers are given and, to support learning, include any necessary working out. An...

Linear Equations

This linear equation calculator from Subtangent allows students to target specific types of equations to solve, ranging from basic questions such as x+5=7 to those which have the unknown on both sides and negative coefficients.

Once a type of equation is selected, the calculator generates a specific equation...

Median and Quartiles

This animation from Subtangent offers a visual representation of median heights.

Students have to order a set of cartoon people according to their height and then use the baseline button, which allows the selection to be checked and the heights read accurately from the vertical axis.

Three arrow heads...

Coins and Dice

This probability simulator from Subtangent allows experiments with coins and dice to be performed quickly.

Students can choose from seven options, including whether to use one coin or two, one or two dice or a combination of both.

The simulation displays the results of the experiments but does not...

Chagas' Disease Life Cycle

From the Wellcome Trust, these animations illustrate the life cycle of the protozoan parasite that causes Chagas' Disease.

The parasites use a blood-sucking insect called a triatomine as an incubator and vector. The protozoan parasite mautures and reproduces in the insect before being deposited on humans in...

Intestinal Worms

From the Wellcome Trust, this animation shows how environment and living conditions can lead to infection by a range of energy sapping intestinal worms.

The three main worms infecting humans are hookworm, roundworm and whipworm. The animation shows how these parasites can be transmitted in areas where soil...

Leishmaniasis Life Cycle

Leishmaniasis is a disease caused by protozoan parasite transmitted by the sand fly. Two animations, from the Wellcome Trust, show the life cycle of the parasite.

They illustrate how the leishmania parasites enter the sand fly and matures in preparation for human infection. The bite from an infected sand fly...

Lymphatic Filariasis

Produced by the Wellcome Trust, this animation shows the complete life cycle of tiny parasitic worms as they move between human and mosquito hosts.

Lymphatic filariasis is a disabling disease found in low-income areas of many tropical and subtropical countries. Parasitic worms multiply in the lymphatic...

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