Describe situations in which opposite quantities combine to make 0. For example, a hydrogen atom has 0 charge because its two constituents are oppositely charged. Front Row is a free, adaptive, Common Core aligned math program for teachers and students in kindergarten through eighth grade. Front Row allows students to practice math at their own pace - learning advanced concepts when they're ready and receiving remediation when they struggle. Front Row provides teachers with access to a detailed data dashboard and weekly email reports that show which standards are causing students difficulty, what small groups can be formed for interventions, and how their students are progressing in math.

CCSS 8.G.1 - video 1 - Translations

In this video, Grammar Squirrel provides three examples to show how the placement (or omission) of a hyphen completely changes the meaning of a sentence. This video was designed to provide a simple tip that should help you use hyphens correctly in your writing.

In this video I answer a question asked on the LingQ forum regarding my known words number in Korean. How do I accumulate so much vocabulary?

Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests. Tags: Operations & Algebraic Thinking, whole numbers, 3.OA.A.2, standardized tests

Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.

This method (I call it a structured drill) allows children to learn the multiplication tables in grade 3 or 4 faster and much more effectively than random drilling! My book Math Mammoth Multiplication 1 at http://www.mathmammoth.com/multiplica... uses this method also. The book covers both the concept of multiplication and the practice of all the tables. It is available both as an instant download and as printed copy. See a free example lesson from the book: http://www.mathmammoth.com/preview/Mu... In the video, I use the table of 3 as an example and go through this three-step method. In the first step, children memorize the skip-counting list. For the table of 3 this is: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36. They also practice saying it backwards, from 36 to 3. In the second step, we work with the table itself, but it is written in order so the child can see its structure. The " randomness " comes from me (the teacher) pointing to various problems in a random order. I also like to point out certain benchmark facts to students: 10 x 3 is 30 and 5 x 3 = 15 are such facts because they're in the 10s table and in the 5s table, which the children probably have learned first. We also practice the tables " backwards " where the " answers " are written and the student tells how many times 3 they are. For example, I point to ___ x 3 = 24, and the child is supposed to say " 8 " . This type of practice makes children learn basic division facts at the same time without realizing it! This really helps third grade students because division is also a topic for third grade math.