Wooden construction set "Excavator", educational model

Assembled wooden educational STEM constructor "Hydraulic Excavator". The assembled model is controlled manually using a hydraulic system operating under water pressure. The constructor helps children to get acquainted with the principles of hydraulics, engineering mechanics and robotics in the simplest way.
Features:
A constructor, toy and educational tool in one, this fun set has great educational value as it transforms complex physics theories into a tangible, playful process.
The model works without electricity or batteries: all movement is created solely by the force of water pressure.
Children develop fine motor skills and precision as they build, and reinforce scientific concepts as they test. Perfect for curious minds, it combines creativity with science, encouraging problem-solving and imaginative play. Kids can experiment, such as using different colored water (to see which syringe controls what) or modifying the structure to lift heavier objects.
Made of high-quality, non-toxic wood. The wooden parts are smooth and durable, and can be varnished or painted in your child's favorite colors.
Easy assembly: simple and clear instructions allow children to assemble the toy with minimal adult supervision, making the set suitable for both independent work and activities with parents.
STEM (Science + Technology + Engineering + Mathematics) are educational methods that integrate science, technology, engineering, and mathematics into a coherent learning model to prepare the younger generation for a world of rapidly evolving technologies.
This is a great choice for a gift, as well as for schools and educational institutions where simple, reliable and clearly functioning educational models are needed.
Operating principle:
The model has four control syringes connected by flexible tubes to the working syringes on the excavator arm. The control syringes are attached to the base, and when pressed, they are controlled by the handle. The working syringes are mounted on the excavator boom mechanism, they move from pressure and perform an action. The syringe system controls the following movements of the model: boom lift/lower, secondary handle movement, bucket opening/closing, structure rotation.
Pascal's Law: Children see in practice how a fluid in a closed system transmits pressure in all directions. They understand that a force applied at one point (the control syringe) can do work at another point (moving the excavator's arm).
Mechanical advantage: By constructing levers, children learn how the length and position of links affect the amplitude and power of movement.
Energy transfer: Understand how mechanical energy (pressing the syringe plunger) is converted into hydraulic and then back into mechanical motion.
Hydraulic transmission: When the child pushes or pulls the plunger of the control syringe, water transmits the pressure through tubes to the corresponding syringe on the lever.
Mechanical movement: Water pressure forces the working syringe to extend or retract, which in turn moves parts of the excavator: raising the arm, bending the bucket, or rotating the entire structure.
This kit provides a great opportunity to discuss alternative energy sources. The model shows how complex mechanisms can operate without using electricity or chemical elements, but only using the laws of physics.
Educational value: fundamentals of physics and engineering.
Purpose: for home learning, classroom learning, project activities.
Technical data:
Material: non-toxic laser-cut wood; metal, plastic.
Dimensions: 300x220x185mm.
Box dimensions: 261x165x55mm.
Weight: 190g.
The set includes:
Wooden model details.
Syringes x8.
Connecting elastic tubes x4.
Glue.
Set of screws and fasteners.
Retractor.
Assembly guide with explanations.
Recommended age: for children aged 6-8.
Attention: Contains small parts, keep away from children under 3 years old. Please allow 1-3 cm deviation due to manual measurement.