Zeroes are more important than they look! A guided practice activity takes learners through the process of both scientific and decimal notation, culminating in more complex word problems and equations.

Should primary graders have their own computers? Should animals be kept in captivity? Young writers learn how to develop and support a claim in this short unit on persuasive writing.

Brazil's population has been changing dramatically in the last century. Study the causes of Brazilian urbanization, including industrialization and and migration, and the implications for the country of the populations'...