1 Multiplying Integers Using Videotape Resource Type: Lessons Discipline: Mathematics Grades: Grade 7 Professional Commentary: In this lesson, multiplication of integers is presented in a format that encourages understanding, not simply rote memorization of rules. Using the rewinding of a videotape to represent negative time, students convince themselves that a negative rate times a negative time yields a positive distance.... 2 Number Line 1: Locations Resource Type: Lessons Discipline: Mathematics Grades: Grades 6–7 Professional Commentary: A number line is stretched across the room with evenly spaced points representing the integers from -10 to 20. Students "dance" along the number line to illustrate addition, subtraction, multiplication, and division.... 3 Number Line 2: Changes and Shortcuts Resource Type: Lessons Discipline: Mathematics Grades: Grades 6–7 Professional Commentary: Working on a number line, students find a way to express the addition of two integers as the addition of a single integer. This site is a sequel to Number Line I: Locations and focuses on addition of integers.... 4 ODE Assessment Item, Grade 7: Product of Integers Resource Type: Assessments Discipline: Mathematics Grades: Grade 7 Professional Commentary: Students must find the product of two integers. This multiple-choice question is a sample item used in the 2007 Ohio Grade 7 Achievement Test (see Overview of Ohio's Assessment System). The URL link (above) takes the user directly to the OAT item (PDF), with access to performance data, complexity level of the item, and discussion of incorrect responses.... 5 NAEP Assessment Item, Grade 8: Multiply Two Negative Integers Resource Type: Assessments Discipline: Mathematics Grades: Grades 5–8 Professional Commentary: Students must identify the product of two negative numbers. This multiple-choice question is a sample test item used in grade 8 in the 1996 National Assessment of Educational Progress (see About NAEP).... 6 NAEP Assessment Item, Grade 8: Subtract Integers Resource Type: Assessments Discipline: Mathematics Grades: Grades 6–8 Professional Commentary: Students must find the difference in height between the top of a mountain and a point below sea level. They have the option of using a calculator.... Resource Type: Content Supports -- Technologies Discipline: Mathematics Grades: Grades 5–8 Professional Commentary: Students can use this applet to practice addition and subtraction of integers (signed numbers) at five different levels of difficulty. (sw) |