Le frottement

The challenge: building 3 prototypes to reduce, as much as possible, the decibels of the sound of an alarm clock. They will only have 10 minutes to make each prototype and they can only use each material once. The family with the fewest decibels in all of their three tries wins. And it must be done in 30 minutes.

The challenge: assembling a magnetic crane on wheels to collect the pieces of a robot that have been scattered around a city of metal. They have different magnets to achieve this. Each piece of robot found is worth 10 points. The family that manages to get the most points wins.

The challenge: reproducing a painting as faithfully as possible while creating one's own paint and brushes from the items in the box. They will get a point if their fruit has the right shape and a point if it has the right color. The family that manages to get the most points wins.

The challenge: placing the most objects of different masses on a game board, without it tipping over. They cannot hold the game board and they cannot place more than two objects at a time. The family that manages to put the most items on the board, without it falling, wins.

The challenge : designing an electrical circuit to operate as many electrical devices as possible at the same time. Each functional object gives them 1 point. The family with the most points wins.

The challenge: building different models of gliders and having them enter the target in order to accumulate points. However, once a glider has hit a target, it can no longer be used. Participants have access to a mystery envelope containing model gliders, but they lose 5 points if they look at it. The family with the most points wins…

The challenge: sending a ball as high as possible by making different prototypes of trampolines. The ball must rebound and depending on which section it lands on, participants will score between 10 and 50 points. The families are evaluated based on the highest score obtained with their best performing prototype. The family with the…

The challenge: successfully filtering muddy water by designing one's own filter prototypes. The family that manages to have at least one cup of filtered water, as clear as possible, wins. They have 30 minutes.

The challenge: building as many insects as possible which move thanks to vibrations. The families have 5 boxes. Each contains material to design an insect, and has a score attached to it. They must use all the materials in the box to get the indicated amount of points. Engines and tools can be used as they please. The family with the…

The challenge: building a pyramid by moving the blocks to the right place, using only simple machines. The families are not allowed to slide the blocks directly to the ground or take them in their hands. They can touch the blocks once they are on the playmat, to put them in the correct direction, but cannot lift them. The fastest…

The challenge: designing an articulated arm to grip as many objects as possible on a plate. To make the arm, the families must use the materials in the box. During the challenge, they cannot pick up objects directly with their hands. Points are indicated on objects according to their size and weight. To help them, they have access to…

The challenge: successfully activating specific elements on a game board, using the gears provided. The families have 7 envelopes and each contains a mission to complete to obtain the scores associated with it. The elements to be activated must turn in the direction indicated and they must turn the crank clockwise to engage their…