32cm popular science transparent celestial globe HD constellation globe black celestial globe middle school geography teaching instrument

J2313 Spherical Conductor 23009 Pillow Conductor Physical and Electrical Experiment Electrostatic Induction Charge Distribution Spherical

Activity Star Chart Four Seasons Constellation Card Mobile Star Chart Rotating Star Chart Primary School Natural Science Teaching Instrument

Electromagnetic Damping Demonstrator Type 24040 Primary and Senior high school Electromagnetics Instrument Physics Teaching Experimental Equipment

Rolling pendulum J21033 physical mechanics experiment rolling pendulum gravity potential energy kinetic energy conversion teaching instrument teaching aid

Metal iron inclined plane 29001 inclined plane car experimental primary school science adjustable angle change slope

Curve Motion Speed Direction Demonstrator Senior One Physics New Curriculum Teaching Instrument Teacher Demonstration Equipment

22027 resonance demonstrator Senior high school physics teaching instrument new curriculum standard demonstration experimental equipment teaching instrument

electronic induction coil 1260 type induction coil pulse high voltage discharge physics electronic induction coil experimental instrument

Iron-shell foil electroscope object with positive and negative electrometers a pair of 2-piece primary Senior high school teacher demonstration

Single pendulum ball group and bracket primary Senior high school physical experiment bracket hand-held single pendulum ball group suit mechanical vibration law

J43106 Rabbit Skeleton Specimen 43107 Fish Skeleton 43109 Pigeon Skeleton Middle School Biology Experiment Teaching Instrument

31032 mechanical transmission model 31024 mechanical mechanism model Senior high school university physics demonstration experiment

Watch glass 60mm100mm biological laboratory equipment chemical laboratory consumables glass watch glass beaker cover

Dalton Plate Galton Plate Random Phenomena Demonstration Experimental Model Gas Molecular Motion Velocity Senior high school Physics

The teacher of the original sub-coil tester demonstrated that the students used to verify the law of electromagnetic induction current magnetic effect.

[Teaching Instrument Belt (Hand-cranked AC/DC Generator, Centripetal Force) Middle School Physics Experiment Equipment

pulley block and bracket suit teaching aids metal hook code strip box dynamometer junior high school physical mechanics experimental equipment

Plane mirror imaging experiment optical glass mirror large semi-reflective science teaching aids junior high school physics teaching instrument

convex lens imaging demonstrator optical train F light source concave lens convex lens imaging screen optical imaging law

Mechanical energy thermal energy interconversion demonstrator J2254 Senior high school physics energy conservation teaching instrument experiment

33216 Hepatoduodenal Pancreas Model Human Digestive Organ Model Middle School Biological Model Teaching Instrument

Spring vibrator air cushion type gas source J2201 horizontal air cushion simple harmonic vibration law physical experimental equipment

21012 buoyancy principle demonstrator junior high school physical mechanics experimental equipment measuring buoyancy influence experimental equipment

wind formation experiment box demonstrator physics mechanics experiment junior middle school teaching instrument experiment equipment

Root longitudinal profile model J33002 early Senior high school biological botany teaching instrument experimental equipment corn root tip

Suction flask filter flask suction device 250ml 500ml 1000ml Buchner funnel with conical flask experiment

33210 alveolar model alveolar enlargement anatomy model lung anatomy model respiratory system human organs

Principle of watt-hour meter explanatory device J0405 mechanical watt-hour meter demonstration junior high school physical electrical experimental equipment

26010 Solution Conductivity Demonstrator Junior High School Senior high school Electrolyte Solution Physics Teaching Instrument Experimental Equipment

Metal hook code 50g * 10g iron hook code 200g * 4 weight combination hook code physical and mechanical balance experimental equipment

J24040 Electromagnetic Damping Demonstrator Experimenter Junior High School Senior high school Electromagnetics Instrument Physics Teaching Instrument

Concave mirror Convex mirror Plane mirror Haha mirror Glass lens Small mirror Children's toys Optical experiment equipment

Buchner funnel ceramic Buchner funnel 60mm80mm120mm suction filter funnel chemical experimental instrument

Lenz's Law Demonstrator Open and Closed Aluminum Ring Conductor Induced Current Tester Cutting Magnetic Induction Line

5Ω 3A/10Ω 2A/50Ω 1.5A/200Ω 1.25A Adjustable Sliding Rheostat Physics Teaching for Middle School