Develop and apply number theory concepts, such as, primes, factors, and multiples, in real-world and mathematical problem situations. Students use the Sieve of Eratosthenes to generate a list of all the primes in the first 100 counting numbers. Hot dogs come in packages of 6. Investigate the relationships among fractions, decimals, and percents, and use all of them appropriately. Answers can be written in their math journals.
Students use shadings on a ten by ten grid to discuss all of the different equivalences.
Find 4 decimals between 0.456 and 0.457. Identify, derive, and compare properties of numbers. Students use Venn diagrams to explore the multiple sets to which particular number belong. A similar question is used on their test. Students explore the property of closure for a variety of sets of numbers under various operations.