American Chemical Society
Man and Materials Through History
From the start of the Industrial Revolution, it only took 147 years for someone to invent plastic. This may seem like a long time, but in the history of inventing or discovering new materials, this is incredibly fast. An informative and...
Curated OER
Sentence Completion 19
Help your English language learners deduce meaning from context clues. Eight multiple-choice questions are provided here; each one has five answer options. Example vocabulary words include refused, absent, and original.