Compute a table of values for a quadratic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.

Student is given a set of constraints for a linear program. Asked to enter the constraints as inequalities, and then to identify the optimal solution.

Compute a table of values for a quadratic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.

Widget Sales

Widget Sales

Widget Sales

Widget Sales

Widget Sales

Widget Sales

Widget Sales

Horizontal and vertical shifts and scales of a random cubic spline

Compute a table of values for a quadratic function. The student input is now disconnected from the graph so that they slide the points on the graph after they input the values and the answer fields are not updated. Now includes a graph in advice.

aleatorio de función cubica

of a random cubic spline

Compute a table of values for a quadratic function. A JSXgraph plot shows the curve going through the entered values.

Find a regression equation given 12 months data on temperature and sales of a drink. Includes an interactive diagram for experimenting with fitting a regression line.

rebelmaths

Horizontal and vertical shifts and scales of a random cubic spline

Doesn't work - used the old extension.

Mark a GeoGebra worksheet.

Needs a worked solution.

Experimental question using JSXGraph to provide dynamic, interactive graphs.

Find a regression equation.

Now includes a graph of the regression line and another interactive graph gives users the opportunity to move the regression line around. Could be used for allowing users to experiment with what they think the line should be and see how this compares with the calculated line.

Also includes an updated SSE to see how the sum of the squares of the residuals varies with the regression line.

Widget Sales

Widget Sales

Use the specific heat capacity of an object and the change in temperature to calculate the heat added to that object

Using differentiation to find the tangent and normal to a line at a given point

Calculate the Pearson correlation coefficient on paired data and comment on the significance.

rebelmaths

Idenitifying straight-line graph equations

Identifying positive, negative and no correlations.

Self-assessment questions. Solve 50% of the available marks to pass this exercise.

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