As part of our on-going discussion of the Cross Cutting Concepts in the NGSS, we examine Scale, Proportion and Quantity in this week's episode. We discuss the challenges with teaching these concepts and provide some solutions as well. Here are some of the resources we share in this episode:

Next Generation Science Standards

We also discuss some research on students' challenge with scale including:

Which can be downloaded at: https://onlinelibrary.wiley.com/doi/pdf/10.1002/tea.20123?casa_token=TJTH1B_5jXAAAAAA:fW0AYI2ESZkLFLsXBKlG8XkHPott2cP_yByYTPQCj5VmuhWBAYRbOAfG_YBerLp1U9Y-1NirfqaUqPFbOg

In our discussion, we compare how the students' development sense of scale can be compared to science knowledge outlined in A Private Universe

Need some prompts for talking scale, proportion and quantity with your students? Check out: http://stemteachingtools.org/assets/landscapes/STEM-Teaching-Tool-41-Cross-Cutting-Concepts-Prompts.pdf

Things that bring us joy this week:

Intro/Outro Music: Notice of Eviction by Legally Blind

Links:

• Conceptual boundaries and distances: Students' and experts' concepts of the scale of scientific phenomena - Tretter - 2006 - Journal of Research in Science Teaching - Wiley Online Library