National Security Agency
Backyard Building - Area and Perimeter
Turn young mathematicians into landscape architects with this four-lesson series on area and perimeter. Beginning with a basic introduction to calculating perimeter and area using non-standard units of measurement, this instructional...
Consortium for Ocean Science Exploration and Engagement (COSEE)
Ocean Acidification: Whats and Hows
Open this lesson by demonstrating the production of acidic carbon dioxide gas by activated yeast. Emerging ecologists then experiment with seashells to discover the effect of ocean acidification on shelled marine organisms. They measure...
Illustrative Mathematics
Sore Throats, Variation 2
What does math have to do with a sore throat? When you mix water and salt you have a great review of how to represent proportional relationships by an equation or graph. Here the proportions of the mixtures may be different, but the...
Missouri Department of Elementary
Communicating with I-Messages (1/2)
Scholars watch two puppet dialogues illustrating negative and positive communication between friends. Then, they discuss how the puppets' communication skills influenced the outcome of each interaction.
Missouri Department of Elementary
Similar and Different
Using a Venn diagram, pupils compare the similarities and differences between two classmates. Next, they review the CARE acronym (Collaboration, Acceptance, Respect, Empathy) and discuss how it applies to diversity in the classroom.