Middle School Chemistry’s Interactive Chemistry Lesson Modules are a set of digital resources designed to complement your in-class, inquiry-based chemistry lessons. Originally developed during the ...

Aside from the laboratory, the outdoors is Erin Joy Araneta’s favorite place to be. When the pandemic hit, she found herself with more time to hike, paddle, and rock climb . . . and to reflect.

The first contains a fine iron powder, salt, and water in a pouch that is permeable to air. When it is exposed to air, the iron begins to rust. This rusting process produces heat. The second contains ...