Hello Walton family!
We have been busy in the 8th grade physical science
classroom this quarter. Students have
been busy refining their measurement skills and learning how to effectively use
them in communicating lab data. We have
had many opportunities to conduct lab experiments which offer practice using
the metric (SI) system. Reviewing the
metric prefixes and converting between metric units is a necessary skill for
comparing data with other scientists throughout the world.
Through laboratory experiments, students have been using
scientific tools such as triple beam balances, rulers and graduated cylinders
to find mass and volume. Once the mass
and volume are calculated, students are then able to solve for the density of
various substances. In one particular
lab, a hypothetical crime had been committed and the suspect had left
substances at the scene with various densities.
Students then used their density calculations and data to determine
which suspect had most likely committed the crime. Although learning to measure correctly sounds
very basic, it is a skill that is necessary to master which will enable
students to compete scientifically in the 21st century.
Another student favorite is the density column. Students
are shown 8 different liquids and asked to predict where each liquid will layer
within the large 1000ml graduated cylinder. This challenges students to think
critically as they combine their prior knowledge along with their new
understanding of density in making a prediction. As a teacher I know it is an
engaging lesson when students ask for permission to take out their phones and
take a picture.
We are now beginning to study various aspects of matter
which will lead us into the study of the atom, Periodic Table and bonding. One student commented to me the other day
"Mrs. Kepple, why would anyone not want to stay here all day and learn
science?". I have to agree with
him. I hope the students are learning
what I already know- chemistry is fun!
Heather Kepple
8th grade science
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