The scientific toy "The Moving Woodpecker" turns a sheet of paper into a small laboratory where children see how the forces of friction, gravity, and elasticity work. The kids assemble a figure and observe how the bird comes to life and slides down. This format of play helps to feel physics without complex formulas and notice how the laws of the world manifest in the movement of the woodpecker. The scientific toy with a funny woodpecker looks simple, but it hides a whole series of physical experiments. Children cut out the figure, attach it to a string, and launch it along a support, while an adult carefully explains why the bird doesn't fall immediately, how weight is distributed, and how the movement becomes smooth. The child sees not an abstract formula but a living result of their actions, and therefore questions about what gravity, friction, and elasticity are sound much more natural. The session is structured so that each participant makes their own toy and tests it in practice. You can experiment with the length of the string, change the angle, try different materials, and observe how speed changes. The kids learn to compare results, draw conclusions, and articulate their observations aloud - all of this gently leads to basic research skills that will be useful both in school and beyond. A mistake here is perceived not as a failure but as a reason to launch the woodpecker again and test the hypothesis. The masterclass is designed for children aged seven to twelve and is suitable for those who love to craft with their hands, ask many questions, and eagerly try new formats of games. Parents can participate in the process, helping with cutting and assembly or simply watching how the child works with enthusiasm. Working together on the toy provides a rare opportunity to talk about science in a simple form, without textbooks and grades, thus relieving the tension around the topic of "difficult" physics. The session takes place in a library space, so after the experiment, you can choose a book about nature and experiments, continue the conversation at home, and come up with your own versions of scientific games.