Introduction to Density Guided Lab - includes introduction to CER

Rated 4.8 out of 5, based on 5 reviews
5 Ratings
My Science Toolbox
315 Followers
Grade Levels
10th - 11th
Formats Included
  • PDF
$5.00
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My Science Toolbox
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  1. It can be overwhelming to be a first year chemistry teacher, especially if you have not trained specifically for it. Students have all kinds of preconceptions about what chemistry is, and it's hard to come up with engaging lessons for the first months while you are just wading through the curriculu
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Description

Combine lesson and lab for increased student engagement and understanding!

This is an 8-page student packet designed to walk students through numerous concepts including density, dealing with data, and collecting data during a lab. It is designed to be done by pairs of students with very minimal teacher assistance. I give my students 3 class days to complete this, and it is well worth the time spent for the skills and concepts that are introduced/practiced in the lesson. Students are able to check as they go, so that errors/misconceptions can be addressed immediately.

Learning becomes tangible instead of theoretical as students learn concepts and immediately use them in lab.

If you have density blocks, you can use them with this, but if you don't, you can substitue other blocks. This can be adjusted according to the materials you have.

Prior knowledge –

- Use of electronic balance and graduated cylinder and ruler

- Significant figure rules for addition/subtraction and multiplication/division

- Intensive versus extensive properties (definition)

- Dimensional analysis

- Metric conversions

Skills/concepts introduced/built during this guided lab lesson –

- Making measurements of density during the lab

- Using the density formula to calculate density, mass, and volume

- Recognizing units for density, mass, and volume (both mL and cm3)

- Density is intensive

- How to use C-E-R (Claim Evidence Reasoning) to summarize your lab findings

- Calculating volume by water displacement

- Techniques for more accurate/precise lab data (and comparing data with multiple lab techniques)

- Percent error

- Dimensional analysis with unfamiliar conversion factors (students are introduced to calculations with Avogadro’s number and molar mass – understanding of it is not necessary or expected yet)

- Accuracy and precision

- Drawing conclusions with lab data

- Using density as an identifying property

- How density determines if objects float or sink

Includes Teacher's Guide and Sample Answer Key

**See the preview for the complete activity (without teacher's guide and answer key) so you can see just how beneficial this will be for your students**

Total Pages
Answer Key
Included
Teaching Duration
3 days
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