Get your Year 4 engineers building with this hands-on, visual Design and Technology lesson on levers and sliders. Pupils begin by spotting everyday mechanisms - door hinges, scissors - before exploring exactly how sliders move in a straight line and how levers pivot around a fixed point, brought to life with clear, colourful diagram-style cards and relatable examples like see-saws and jumping frogs. The lesson then walks children through the design process, encouraging them to plan their moving picture and choose the right mechanism before they start building. Two genuinely hands-on activities complete the hour: a Mechanism Hunt that sends pupils searching the classroom for real examples, and a full Build a Moving Picture project where children sketch, construct and test their own lever or slider mechanism. Warm, encouraging language written directly to the child, plus full-colour icon cards and speech-bubble prompts throughout, keep this lesson interactive and enjoyable rather than a dry technical read. A complete, ready-to-teach hour that brings the DT curriculum to life. No preparation needed. Ideal for the KS2 Design and Technology curriculum.