DNA Helix Activity Model – 3D Double Helix Construction Kit (Suitable for KS3+)

This engaging DNA Helix Activity Model allows students to build a clear and accurate three‑dimensional representation of the double helix structure of DNA. Designed for KS3 and above, the model offers a highly visual, hands‑on way to explore the structure, function, and base‑pairing rules of deoxyribonucleic acid.

The colourful bases snap together in the correct complementary sequence, emphasising how adenine pairs with thymine and cytosine pairs with guanine. Each base pair attaches to a central rod representing hydrogen bonds, while two flexible strands illustrating alternating pentose sugar and phosphate groups secure to each side, forming the iconic double‑helix shape.

Once assembled, the complete model can be rotated on its sturdy base for easy viewing from all angles—ideal for demonstrations, revision, and interactive learning. The kit includes all components required to build one full model, along with a detailed instruction manual. Approximate size: 13 × 13 × 45 cm. Approx. weight: 250 g.

Key Features

• Designed for KS3, KS4, and GCSE biology
• Construct a full 3D DNA double‑helix model
• Colour‑coded bases snap together in correct complementary pairs
• Central rod represents hydrogen bonding between base pairs
• Flexible sugar‑phosphate strands form the helical backbone
• Sturdy, rotating base for display and demonstration
• Includes all materials needed to construct one model
• Supplied with instruction manual