Arthur’s Model Ramp

Arthur builds a model shop for his toy delivery cart. The shop floor is a little higher than the road. When the cart reaches the step, its wheels stop. Aunt May watches him lift it over. “Could it roll all the way in?” she asks.

Arthur rests a short strip of card from the road to the shop. The cart can reach the top, but the ramp is steep. When he lets go, it rolls back quickly. He catches it inside the broad play tray and stops the test.

They make a longer ramp from the same kind of card. It reaches the same shop floor with a gentler slope. Arthur pushes the cart slowly up it. Halfway along, however, the card bends beneath the load and the wheels catch in the dip.

Arthur points to the sagging middle. Aunt May places a broad wooden support beneath it. They check that the support is stable and cannot slide. The longer ramp now has a firm surface from the road to the shop doorway.

They use the same toy cart and small load again. It rolls over the supported ramp without catching. Arthur keeps his hand beside it rather than letting it run away. “The longer ramp is less steep,” he says. “And the support stops it bending.”

His cousin tries a delivery next. At the top, she cannot turn the cart because a model shelf blocks the space. Arthur moves the shelf back. They leave a level area before the doorway, wide enough for the toy cart to turn.

The cousin makes another delivery. She rolls up, stops on the level space and turns into the shop. Arthur asks which part was awkward before. She shows him the old shelf position. Her test helped him notice something he had missed.

They put the model away with its support and wider landing still in place. Arthur draws the cart’s route. “A ramp is not just a strip across a step,” he tells Aunt May. “We had to think about the whole journey.”