1 Set Physical Experiment Equipment Expansion and Contraction Material Thermal Expansion and Contraction Tool Physical Experiment Material Physical Experiment Tool Teaching Aid

Features

• Gauge: scientific physical experimental tool to exercise practical ability
• Thermal expansion experiments tools: use the small ball through the ring at room temperature
• Expansion and contraction experiment: design to prove the effect of thermal expansion and contraction
• Physical teaching aid: scientific physical experimental tool to exercise student’s practical ability
• School teaching supply: at this time, the metal ball expands due to heat, so it cannot pass through the ring