[EL4] Grade 4 -- Curriculum Overview

Overview

  1. Major Topics Explored:
  • Deeper understanding of forces and energy transfer.
  • Light and optics, including reflection and refraction.
  • Introductory electricity (circuits and electromagnets).
  1. Form Factor of Lab Session:
  • Interactive stations with individual or pair-based experiments.
  • Use of project-based setups like simple circuits, mirrors, and prisms.
  • Visual demonstrations that bridge hands-on activities with theoretical discussions.

Session 1: Exploring Energy and Motion

  • Doubly Suspended Pendulum: Dive deeper into the study of chaotic motion by observing a large double pendulum, connecting to concepts of energy, gravity, and motion.
  • Domino Chain Reactions: Reinforce the concept of chain reactions with a larger setup to explore how energy transfers in systems, linking to lessons on cause and effect in science.

Session 2: Understanding Light and Optics

  • Infinite Mirror: Demonstrate how light reflections can create an illusion of infinite depth, introducing students to the principles of mirrors, reflections, and optics.
  • Holography: Expand on light principles by having students etch holographic patterns on plastic tiles, creating optical illusions, and exploring the diffraction of light.

Session 3: Forces in Action

  • Tug of Friction: A fun demonstration of how friction can be more powerful than expected by using books and friction to resist force, tying into physics lessons on forces and resistance.
  • Fire in Water (Sodium Reaction): Revisit the explosive reaction between sodium and water, diving deeper into chemical reactions and oxidation-reduction reactions to reinforce chemistry lessons.

Session 4: Exploring Chemical Reactions

  • Elephant Toothpaste: Study this fascinating chemical reaction once again, focusing on the role of catalysts and chemical kinetics, tying into discussions about reaction rates in chemistry.
  • Lichtenberg Patterns: Use high voltage to create beautiful branching patterns on wood, helping students understand electricity, discharge, and conductivity.

Session 5: Wave Phenomena

  • Wave Machine: Study how waves move in different mediums by observing a 25-foot-long chain of rods sewn through a rope, helping students understand wave behavior, frequency, and amplitude.
  • Chladni Patterns: Create intricate patterns with sand and sound, reinforcing concepts of wave mechanics, vibrations, and resonance.

Session 6: Biology in Action

  • Microscopic World: Use digital microscopes to magnify small objects and microorganisms, teaching students about the structure of cells, microorganisms, and material properties at a microscopic level.
  • Starch in Leaves: Conduct experiments to test for starch in different plant leaves, reinforcing concepts about photosynthesis, plant biology, and the food production process.

Session 7: Electricity and Magnetism

  • Levitating Balls: Use fast-moving air to suspend balls in mid-air, introducing students to the principles of pressure, fluid dynamics, and gravity.
  • Lichtenberg Patterns: A second round, focusing on creating these patterns using electricity to further explore the ideas of electrical currents and discharge on different materials.

Session 8: Heat and Sound

  • Rijke Tubes: Use heat to make metallic pipes generate sounds, exploring sound waves, heat transfer, and resonance in an interactive way.
  • Sound Tunnel: Use two parabolic domes to communicate sound over long distances, linking concepts of sound propagation, waves, and acoustics.

Session 9: Advanced Optics and Geometry

  • Reflection, Refraction, and Internal Reflection: Further explore how light behaves when it interacts with different materials using water and colored lasers to demonstrate multiple optical effects.
  • Disappear in Lenses: Use convex lenses to manipulate light and make objects appear to disappear, reinforcing principles of optics, lenses, and focal points.

Session 10: Student Demonstration Day

  • DIY Demonstrations: Students will present their chosen experiments from previous sessions, demonstrating their grasp of scientific principles and their ability to perform and explain science demonstrations to their peers.