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Multipurpose Geo Sticks for School Maths Lab
Modular Multi-Length Component Array: The kit features 80 high-tensile plastic strips organized into four color-coded lengths, engineered with uniform snap-fit pivot points that allow for the simultaneous construction of diverse 2D structures.
Integrated 360-Degree Geometric Protractor: Included in the set is a precision-graduated circular template designed to pivot with the flexible strips, facilitating the empirical measurement of vertex angles and the exploration of circle properties.
$1.80
Quick Answer: Multipurpose Geo Sticks are sticks or strips that join at their ends to build line segments, angles and polygons that students can reshape by hand. Maths classes use multipurpose geo sticks to test the triangle inequality, compare rigid and flexible shapes and investigate angles and perimeter.
Building Shapes That Move
A drawn triangle cannot be pushed out of shape; a triangle built from sticks can be tested. Students join three sticks and find that the triangle holds firm, then join four and find that the square leans over into a rhombus at the slightest push. That observation explains why roof trusses, bridges and bicycle frames are full of triangles, and why a gate has a diagonal brace. The four sides of the leaning shape keep their lengths, so its perimeter is unchanged while its area shrinks, which surprises most students.
Sticks of different lengths let students discover the triangle inequality. Three sticks form a triangle only when the two shorter ones together are longer than the longest; with lengths of 3, 4 and 8 units, the short sticks cannot meet. Recording which combinations work turns trial and error into a rule the students have found themselves.
Joined sticks also make angles that open and close like a hinge, which helps students see that the size of an angle depends on the turn between the arms, not on the arm length. Building polygons with more sides and measuring their angles leads to the angle-sum pattern of 180° for a triangle, 360° for a quadrilateral and so on. Stick lengths, colours and the joining method should be confirmed before ordering.
Applications
- Testing which three lengths form a triangle
- Showing that triangles are rigid while quadrilaterals can change shape
- Keeping perimeter fixed while area changes by pushing a quadrilateral over
- Making angles that open and close to compare their sizes
- Building polygons and measuring their angle sums
Care & Handling
- Take multipurpose geo sticks apart at the end of the lesson so joints are not left under strain.
- Sort sticks by length into labelled bags or trays.
- Check joints and ends for sharp edges before use with younger children.
Specifications
| Item | Joinable sticks or strips for building angles and polygons |
| Topics | Triangle inequality, rigidity, angles, polygons, perimeter |
| Typical level | Primary and middle-school geometry |
| Used with | Protractor, ruler, recording sheet |
| Stick lengths, colours, joining method and quantity | Confirm at enquiry |
Why Choose LabEquip
Teachers who want students to test geometric facts rather than only draw them often combine these sticks with pin boards such as the Isometric Geoboard. LabEquip lists both in its Mathematics School Lab Products range; ask about stick lengths and quantities through the LabEquip contact page.
Frequently Asked Questions
Why is a triangle rigid but a square is not?
Three fixed side lengths allow only one triangle shape, so the joints cannot move. Four fixed side lengths can make many quadrilaterals, from a square to a thin rhombus, so a four-sided frame folds over unless a diagonal brace turns it into two triangles.
What is the triangle inequality?
In any triangle, the two shorter sides together must be longer than the longest side. Sticks of 3, 4 and 5 units make a triangle, but sticks of 3, 4 and 8 units cannot, because 3 + 4 is less than 8.
Can the sticks show that perimeter and area are different?
Yes. Build a square and push it over into a rhombus. The four sides, and so the perimeter, stay the same, but the shape becomes flatter and its area gets smaller, which shows that equal perimeters do not mean equal areas.
Does the length of the arms change the size of an angle?
No. An angle measures the turn between two arms. Joining two long sticks and two short sticks at the same opening gives the same angle, which corrects a common belief that longer arms make a bigger angle.
How do the sticks help with angle sums?
Students build a triangle, a quadrilateral and a pentagon, measure every angle with a protractor and add them. The totals come close to 180°, 360° and 540°, rising by 180° with each extra side.
How are geo sticks different from a geoboard?
A geoboard fixes the corners of a shape on a grid of pins, which suits area and coordinates. Geo sticks fix the side lengths and leave the angles free, which suits rigidity, the triangle inequality and angle work.
Last Updated: September 2026
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