Study On The Cases Of Hand-Held Technologe Application To Microscale Chemical Experiment In Middle School

As a new method and technology of chemical experiments,microscale chemical experiment has the advantages of small dosage of reagents,time saving,little or non-pollution and high safety et cetera.It is the direction of the reform on chemistry experiment teaching in middle school.Just like the conventional experiments,the microscale chemical experiments can only show the experimental results qualitatively.It can’t show the experimental process in real time and the experimental results quantitatively.Handheld technology can collect experimental data quantitatively.Its most prominent advantages are accurate,portable,real-time,intuitive.It can realize the curve characterization of the experimental results.Therefore,based on the teaching methods of constructivism and the theory of inquiry learning,we organically combine the handheld technology with four microscale chemical experiments in middle school using a new view.By the curve exhibition,the experimental results are more accurate and the effects of chemistry experiment teaching in middle school are greatly enhanced.In this article,the four middle school chemical experiments which combine the handheld technology with microscale chemical experiment are explored and two experimental cases are designed and developed.By the integration of the experimental devices and experimental contents,the superiorities of two experimental methods are complementary each other.This is great significance to stimulate students’ interest,enhance their ability to explore problems and improve the innovative consciousness and creative abilities.