Recently on problem making, there are lots ofproblem making atunitopen. But, problem making atunit open have some question. First, the objectofunitis notcorrespond with the interestofschoolchild. Second, studying textbook are little. Third, as the time ofdiscussion is long, the time ofexperimentand abservation are short. So, to solve these questions, problem making are made on unit end. If problem making is made at unit end, developing problem willbe made, the interest of schoolchild will be satisfied. And to study content of unit, textbook willbe more used. The time ofexperiment and observation willincrease.

The class is done on five years ofelementary school. The unitis the structure and function ofplants. The work-sheets that was made atthe class were Ureshino form.

On problem making at unitend, thirty-six schoolchilds made problems and four schoolchilds could not make. Expected activities were all observed. Ureshino work-sheets made action of schoolchids lively.

A new method of simple polyacrylamide gel electrophoresis for biological education was developed. This new method has several merits as follows. 1) The appratus could be made ofonly utilize materials, e. g., slides, acryl plate, acryl stick, stainless wire, food-containers, terminals, and so on. 2) The experimental procedure is more simplified than ordinary polyacrylamide gel electrophoresis methods. 3) The experiment can be performed within about 90 min. In this paper, the apparatus, experimental procedure, and the examples ofthe experiments are described in detail.