In order to trigger students' thinking, this teacher posed an overarching inquiry question (which lacks a conclusive theory) to them and tasked them with formulating their own theories about the question.
Model of Cells
Cells and DNA
Acids and Alkalis
Menstruation
Instead of menstruating every month, why is the uterine lining (endometrium) not sustained continuously throughout the life of a woman from puberty to menopause?
The theory formulated by Crystal, the teacher, is that it would require a lot of energy to sustain the endometrium continuously, and from an evolutionary point of view, this is not very efficient for the body.
In order to guide students towards an explanation for this question, Crystal provided guiding questions: Why do women undergo menstruation? What is the uterine lining used for? What causes the uterine lining to grow and thicken? Why can the uterus be a good environment for bacteria to grow? How can it affect the woman when microbes grow in the uterus?
Here is the KF view generated:
Nutrition in Humans
Is faeces a type of excretion?
The question led students to think about what excretion is. They came up with many other questions such as "Is faeces edible and is urine drinkable?" Students went on to find out the components of urine and faeces and whether they contained any useful nutrients that could be utilised by the human body.
Enzymes
Students started off the topic on enzymes with an experiment of yeast and hydrogen peroxide, but without knowing the contents of the experiment.
The enzyme catalayse in yeast cells catalysed the breakdown of hydrogen peroxide into water and oxygen gas, resulting in bubbles formed. Students were allowed to smell and hold the test-tube, and using their observations, they were asked to provide a hypothesis of the contents in the test-tube.
