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Profile Of : Barrie Galpin

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Barrie Galpin


barrie.galpin@zen.co.uk

www.tcubed.org.uk


DEMO Description

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Diameters of Polygons

Investigate the ratio of perimeter to diameter for regular polygons.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Område:  Mathematics

Labels: 2D shapes, Perimeter, Polygons

Sequences

Generate sequences using term-to-term and sequence to term rules.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Jay Timotheus

Område:  Mathematics

Labels: Patterns

The Discriminant

Explore the role of the discriminant in describing the roots of quadratic equations.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Andy Kemp

Område:  Mathematics

Labels: Quadratic

Transformations of Graphs

Explore transformations of graphs in a dynamic environment.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Område:  Mathematics

Labels: Functions, Transformations, Graphs

Compare the weather

Use data display and statistical calculations to investigate weather data for 20 world locations with very different climates.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Linda Tetlow

Område:  Mathematics

Labels: Data, Climate, Sustainability

Semigrams

Investigate shapes formed by joining mid-points of adjacent sides of a quadrilateral.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Område:  Mathematics

Labels: 2D shapes, Geometry

Investigating magnetic fields

Use a voltage probe to investigate em induction when a magnet passes through a coil of wire.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Ian Galloway

Område:  Physics

Labels: Physics

How many squares?

Encourages a systematic approach when searching for solutions. (Works well with TI-Nspire Navigator)

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Andy Kemp

Område:  Mathematics

Labels: Circles, Mathematical thinking

Coordinates

An introduction to the use of coordinates for younger students

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Område:  Mathematics

Labels: Coordinate systems

Midpoint Investigation

Investigate the relationship between the coordinates of the endpoints of a line segment and the coordinates of its midpoint.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Karen Birnie

Område:  Mathematics

Labels: Points and lines, Coordinate systems

Dissecting squares

A square is dissected to form three triangles and a quadrilateral. What fraction of the square is each part?

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Område:  Mathematics

Labels: Fractions, Scattergraphs, Algebra, Geometry

Temperature Conversions

At what temperature does the number of degrees C equal the number of degrees F?

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Område:  Mathematics, STEM, Physics

Labels: Positive/negative numbers, Temperature, Use of scales, Physics

Triangles

An introduction to the angle properties of triangles and their construction.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Område:  Mathematics

Labels: Angles, Triangle

Connecting Algebra, Geometry and Graphs

Move from words to symbols, to geometric representations, to plotted points and finally to graphs.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Allan Duncan

Område:  Mathematics

Labels: Linear, Quadratic, 2D shapes, Letters and symbols, Geometry, Algebra

The Warehouse Problem

Where to position a warehouse in order to minimise travelling distance to the three stores it serves?

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Ron Lancaster

Område:  Mathematics

Labels: Modelling

Intersecting Tangents of a Parabola

Construct two tangents to a parabola and investigate the coordinates of their point of intersection.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Område:  Mathematics

Labels: Quadratic, Simultaneous equations, Reasoning, Coordinate Geometry, Tangent

How many solutions?

Use graphs and the nsolve(...) command to explore equations' solutions and discover properties of negative indices.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Nevil Hopley

Område:  Mathematics

Labels: Decimals, Exponential, Powers and roots, Calculator methods, Index, Mathematical thinking

Graphs in the next dimension

Use an introduction to 3D graphs to reinforce understanding of 2D graphs. (Operating System 3.x)

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Nevil Hopley

Område:  Mathematics

Labels: Linear, Quadratic, Functions, 3D objects

Circle Angles

Seven activities in which students investigate angles in circles using basic geometric constructions.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Område:  Mathematics

Labels: Angles, Circle theorems, Geometry

Cone Volumes

Calculate and optimise the volume of a cone using a variety of measurements. (OS 3.x)

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Nevil Hopley

Område:  Mathematics

Labels: Functions, 3D objects, Surface area, Pythagoras, Triangle, Cones, Trigonometry, Volume