This is a multi-step problem since it requires more than two steps …
This is a multi-step problem since it requires more than two steps no matter how it is solved. The problem is not scaffolded for the student, but each step is straightforward and should follow from the previous with a careful reading of the problem.
Through two lessons and their associated activities, students do the work of …
Through two lessons and their associated activities, students do the work of scientists by designing their own experiments to answer questions they generate. Through a simple activity involving surface tension, students learn what a hypothesis isâand isn'tâand why generating a hypothesis is an important aspect of the scientific method. In the second activity, with bubble gum to capture their interest, students learn to design and conduct controlled experiments to answer their own questions about the amounts of sugar (or artificial sweetener) in bubble or chewing gum.
Parts (a) and (b) of the task ask students to find the …
Parts (a) and (b) of the task ask students to find the unit rates that one can compute in this context. Part (b) does not specify whether the units should be laps or km, so answers can be expressed using either one.
Students conduct a simple test to determine how many drops of each …
Students conduct a simple test to determine how many drops of each of three liquids water, rubbing alcohol, vegetable oil can be placed on a penny before spilling over. Because of their different surface tensions, more water can be piled on top of a penny than either of the other two liquids. However, the main point of the activity is for students to come up with an explanation for their observations about the different amounts of liquids a penny can hold. To do this, they create hypotheses that explain their observations, and because middle school students are not likely to have prior knowledge of the property of surface tension, their hypotheses are not likely to include this idea. Then they are asked to come up with ways to test their hypotheses, although they do not need to actually conduct these tests as part of this activity.
سيقوم الطلاب بتحليل النسب وسيستخدمون النسب لحل المسائل بواسطة نشاط تعاوني وحركي …
سيقوم الطلاب بتحليل النسب وسيستخدمون النسب لحل المسائل بواسطة نشاط تعاوني وحركي والذي فيه سينشئون "نسبًا بشرية". سيطبق الطلاب المنطق النسبي لتمثيل تطبيق حالة تضاعفية باستخدام الضرب التبادلي لحل النسب.
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