Tous à la rivière : le refroidissement

Bertille's cabin is on fire. Olive invents a reciprocating pump because using mammoths to put out fires is not very functional.

The islanders try to find the most efficient way to milk the mammoths. After several attempts to lift the mammoths, Olive and Franck create a system of double pulleys to facilitate changes in direction, speed and force for lifting the animals. You will discover the very first mammoth milk production plant, not to mention the very…

Because mealtime causes huge traffic jams, the islanders come up with an ingenious plan to build a new road. During construction, they discover all sorts of uses for inclined planes to facilitate the movement of people and equipment. In this episode, the islanders uncover the principle of one of the first machines ever invented, the…

The islanders are experimenting with the principle of buoyancy. When an object is placed in water, its volume will displace the water, which in turn pushes the object away. If the force of buoyancy is equal to the weight of the object, the object floats.

The date of the big contest for the heaviest mammoth is approaching. Olive uses her creativity to find solutions to weigh the mammoths, using a complex system of levers to make the task easier.

Because of the summer heat, the mammoths give off a stench. To remedy this, the islanders try to wash them. Based on the principles of wheels and axles, Franck, Barnabé and Olive make several attempts to build machines to dry the mammoths.

To meet the delivery deadlines for her aunt's pizza store, Olive designs a series of engines and rockets for the delivery mammoths.

Bertille is trapped in the tower. On the advice of Olive and the inventor, the villagers build a ramp around the tower and turn it into a giant screw to free Bertille. What ingenuity!

Each year, the inhabitants of the island prepare a big fun fair. But this summer, Olive decides that the party must be really successful. The inhabitants of the island set up a fabulous merry-go-round, combining a swing and a series of gears. This simple machine makes it easy to change direction, speed and force.

Our island experts explain that when light rays penetrate transparent materials, they are refracted or diverted. Light rays from a distant object are deflected by the lens and converge on a surface. The light rays, coming from the top and bottom of the object, are inverted and the image they form is reversed. This episode is about the…

Franck and Barnabas discover that when they attach a blind to the back of a delivery mammoth, it flies away, pushed by the wind. They review the properties of air and the four forces of flight to modify their invention.

Even on the island of the mammoths, misfortune happens quickly. One sunny day, the bridge leading to the island of pastures suddenly collapses, leaving Barnabas and his herd stranded on the other side! Fortunately, the inhabitants of the island soon build a boat based on the principles of the magnetic field that will bring the…

The discovery of steam engines opens new perspectives for the inhabitants of the island in search of speed and strong sensations.

On the occasion of the big golf tournament, Barnabé undertakes to take portraits of the winners, but it is an undertaking that takes far too long. To beat all the records and thanks to the principle of photography, the players will finally receive their reward.

The weather is freezing on Mammoth Island, and a hot bath would be a comfort to the inventor, but all the water pipes are frozen. Frank and Barnabas set up an ingenious 'mammoth-calorific' shower system. The system only works if the mammoth is not awakened.

Olive would love to see beyond the mountains. Despite their attempts to get there with a convertible and a mammoth, as well as hike to the end of the mountain, they can't because there is a huge cliff. The only way to get there is by hot air balloon. We will discover how this one works!

During the summer, Tom and Olive work as mail carriers. There's nothing like a mammoth to pull the mail cart, but when it comes to stopping the cart, our friends just miss an accident. Fortunately, the inventor demonstrates the effectiveness of the brakes and takes the opportunity to explain the phenomenon of friction.

To reach new pastures, our heroes must guide their mammoths through a real labyrinth of canyons. But as soon as they find themselves in this immense maze, the mammoths, frightened by the echo of the voices, panic and flee. It is by using the phenomenon of sound and vibration that they manage to gather the herd.

The Mammoth Island ferry was the first to provide a regular link with the neighboring island. Unfortunately, during its first crossing, its cargo fell into the water. Olive and the inventor use the principles of immersion to recover the luggage that has fallen to the bottom of the sea.

To pick coconuts, Tom has developed a clever technique. His mammoth lowers the branches of the coconut trees with a rope, and Tom only has to raise his arms to harvest the fruit! But one day, he accidentally discovers that harvesting can be even more efficient and deliveries faster thanks to springs. By using leaf or spiral springs,…

To pick giant lemons, Tom, on the back of a mammoth, uses a metal spear. But beware, there is electricity in the air! As he plunges his harpoon into a lemon, he and his mammoth receive an electric shock! In this episode, the inventor explains the principle of electricity.

Today, Bertille has decided to go to the market. While she is away, Tom and Barnabé are in charge of tidying up the kitchen. While Tom is rushing to do the dishes, Bertille's wedding ring falls into the sink! With the help of their friends, they will try everything to recover it before Bertille returns.

On the island, everyone thought it was impossible to make music without the mammoths... until the day when the inventor teaches our friends to play with real instruments that produce vibrations with the air. After a few rehearsals, more noisy than melodious, the new Mammoth Island Orchestra is finally ready for the concert on the…

Out with the old, in with the new! Bertille and Barnabé set out to modernize the Mammoth Inn they had just inherited. They equip it with the most modern and sophisticated devices: alarm systems, smoke detectors, sliding doors and metal detectors soon replace the mammoths that used to be the picturesque charm of the place. This does…

On the island of the mammoths, the 'telephone stones' turn out to be a somewhat hazardous and sometimes even dangerous means of communication! After the inventor's explanations, the islanders quickly adopted the telephone. This electric telephone sends signals that travel through electrical wires and are eventually…