Skip Counting Easy 1’s to 100 with Obie Leff. Skip Counting is a great primer for learning your multiplication tables. Visit http://www.singtolearn.com to see more videos, get song lyrics, download tracks, and buy CDs. Or, become a member of Club Obie for full access to our growing library of educational music videos. Perfect for the classroom teacher to display on their digital projector with broadband access.
Duration : 0:3:12
Access full lesson containing this video at: http://www.yourteacher.com/algebra2/factoringbygrouping.php Students learn to factor a polynomial that has four terms by grouping the first two terms together and the last two terms together, then factoring out the Greatest Common Factor from each group. For example, to factor ax — ay + cx — cy, the first step is to factor out an “a” from the first two terms, and factor out a “c” from the last two terms, to get a(x — y) + c(x — y). The problem can now be thought of as two terms, each with a Greatest Common Factor of (x — y), so an (x — y) can be factored out, to get (x — y)(a + c).
Duration : 0:2:1
Access full lesson containing this video at: http://www.yourteacher.com/algebra1/completingthesquare.php Students learn to solve quadratic equations by completing the square. For example, to solve the equation s^2 – 6s + 5 = 0, the first step is put the constant term on the opposite side of the equation as the terms that contain the variables, by subtracting 5 from both sides, to get s^2 – 6s ___ = – 5 ___. Next, the number that goes in each space comes from half the coefficient of the middle term squared, which in this case is half of -6, or -3, squared, which is +9. So a +9 goes in each space, to get s^2 – 6s + 9 = – 5 + 9. The trinomial on the left side of the equation then factors as (s – 3)(s – 3), or (s – 3)^2, and the right side of the equation simplifies to 4, so the problem now reads (s – 3)^2 = 4. Finally, take the square root of both sides to get s – 3 = plus or minus 4, so s – 3 = 4, or s – 3 = -4, and solving each equation from here, s = 7 or -1.
Duration : 0:3:4
A simple sales database is used to demonstrate how a query can be made to select sales information that will be used to create a printed invoice. Query by form is used to select the sales transactions to one customer on one date. Please note that this database has a simplified data structure with just one table storing the sales transactions.
Duration : 0:6:47
Microsoft Access Using Aggregate Functions Group By Queries
Microsoft Access 2007 Tutorial – Data Collection By Email