This resource contains two excel programs with interactive spreadsheets dealing with linear inequalities in one or two variables.
Inequalities: One variable
This excel workbook deals with linear inequalities in one variable. The first sheet illustrates inequalities on a simple number line. The next eight sheets generate inequalities which are illustrated on number lines and the algebraic form can be revealed. Single or two way inequalities can be chosen. Integer values or continuous variables also may be chosen. The next two sheets each present the student with a set of linear inequalities to solve.
The workbook contains a further five printable worksheets providing further questions for use in the classroom.
Inequalities: Two variables
For success with this activity students need to be able to recognise the equations of straight lines. This excel workbook has a series of five worksheets which show a set of permitted points on a coordinate grid. Students need to write the appropriate inequalities to specify those points. The algebraic form of the inequalities can be hidden or revealed.
This workbook also has eight worksheet of questions which may be suitable for use in the classroom.
This program was designed to be viewed on a screen with a resolution of 1024 x 768. Users may have to adjust the resolution of their screen for the pages to display as was originally intended. The program uses macros which need to be enabled on a machine.