This DIY Salt water car kit allow students to construct their very own car that uses salt water as the energy source. Through the construction process, students can also learn about problem solving and attention to detail when reading the manual. Salt water is an electrolyte that conducts electricity. Magnesium and carbon sheets react with the salt water (the magnesium loses electrons and the oxygen attached to the carbon sheet gains electrons) which creates an electrical current in a closed circuit. 

Science Curriculum Strands:

1.    Understanding Life Systems

2.    Understanding Structures and Mechanisms

3.    Understanding Matter and Energy

4.    Understanding Earth and Space Systems
Relevant Curriculum Expectations:
1.    Understanding Structures and Mechanisms:
·         Grade 3 - Strong and stable structures; Forces that act on structures and mechanisms

·         Grade 6 - Understanding basic mechanisms related to simple machines; Understanding electrical circuits
2.    Understanding Matter and Energy:
·         Grade 5 - Properties of and changes in matter; Conservation of energy and resources
3.    Strong and Stable Structures:
·         The car kit likely involves building a stable chassis to support the moving parts.

·         Students can learn about the importance of structure stability in vehicle design.
4.    Forces Acting on Structures:
·         Students can explore how forces like friction, gravity, and air resistance affect the car's movement.

·         They can experiment with different designs to optimize speed and efficiency.
5.    Basic Mechanisms and Simple Machines:
·         The kit may involve wheels and axles, teaching basic mechanical principles.

·         Students can learn about gear ratios and how they affect speed and torque.
6.    Understanding Electrical Circuits:
·         Depending on the kit's complexity, it may incorporate electrical components powered by the saltwater battery.

·         Students can learn about circuits, conductivity, and energy conversion.
7.    Properties of Matter:
·        Exploring the materials used in the kit, such as plastics, metals, and electrolytes in the saltwater battery.

·         Discussing how materials' properties influence design and functionality.
8.    Conservation of Energy and Resources:
·         Discussing alternative energy sources like the saltwater battery and their environmental impact.

·         Encouraging discussions on sustainable energy solutions for transportation.