Mathemizer

Rounding Decimals Practice with Number Lines - Students often struggle with rounding because they do not understand what is actually going on mathematically. Rounding is really just about choosing the value that the original number is closest to. This lesson will demonstrate to students how to use number lines to represent rounding with a visual model. Common "rules" such as rounding up when there is a 5, or carrying when there is a 99 in the number are addressed and modeled within the lesson.

Divisibility Rules Lesson and Practice - Tired of students thinking 51 is prime? What about 57? 87? These guided notes will teach students the most common divisibility rules. Divisibility rules for 2, 3, 4, 5, 6, 9, and 10 are included in this lesson. Now they'll never be tricked by pesky 51 again! This lesson for teaching divisibility rules includes a 2 page graphic organizer with sentence starters that allows students to fill in the important notes while leaving you free to walk about t

Looking for an engaging, hands on activity to help your 6th grade students understand prime factorization? This discovery based, guided activity for decomposing numbers with linking cubes will keep your students engaged and interested. This activity uses colored linking cubes to represent different prime numbers. Students snap together cubes to compose and decompose numbers into their prime factors. Problems gradually increase in difficultly level and students are guided to explain their stra