I can’t teach ________ , because my students don’t know ________ .
Add / Subtract
Rational Expressions
1
+
3
12
26
36
56
+
1+
312
=56
1+
415
=920
1+
314
=712
1+
315
=815
2+
315
=1315
3+
1023
=2930
3+
415
=
3+
415
=1920
A+
BCD
=AD + BC
BD
A+
BCD
= BD
2+
X3Y
=
XY
2+
X3Y
=2Y + 3X
XY
3+
x-12
x+3=
(x-1)(x+3)
3+
x-12
x+3=
(x-1)(x+3)
3(x+3) + 2(x-1)
Student Assessment
1+
413
=712
5+
247
18=
1824
=34
CD = 72
1824
=34
5=
241572
7=
182872
+
5372
+ Polynomials
6 7 2 = 6(100) + 7(10) + 2(1)
6 10 + 7 10 + 22
6 n + 7 n + 22
6x + 7x + 22
5 3 2 + 3 4 1
8 7 3
Addition - Left
• 412 + 352 + 215 =
• 123 + 502 + 271 =
• 432 + 125 + 301 =
(5x + 3x + 2) + (3x + 4x + 1)2 2
= (8x + 7x + 3)2
Multiplication
3 2 6 7 26 4
3 2 2 1x
3x + 6
x + 2 x + 3
2x + 2x2x + 5x + 6
(x + 3) (x + 2) = x + 5x + 62
(x + 4) (x + 5) = x + 9x + 202
(x + 10) (x + 5) = x + 15x + 502
(2x + 3) (3x + 5)
6x + 8x + 152
10x +15
2x + 3 3x + 5
26x + 9x26x +19x +15
(2x + 3) (3x + 5)
(2x + 3) (3x + 5)
26x + 19x + 15
F O I L
6 2
3 2 2 1x
6 2
3 2 2 1x
7
Relations & Functions
Functions
Special relation in which
no 2 ordered pairs have
the same 1st element.
Menu
Hamburger ……….4
Hotdog ……………3
Sandwich …………5
00
00
00
H, Hd, S,400 300 500
400H, Hd,( ,S)300 500
400(H, ) (Hd, ) (S, )300 500
.501,
2,
3,
100
150
.50(1, )
(2, )
(3, )
(10, ? )
100
150
Cold Drinks
.501,
2,
3,
100
150
.50(1, )
(2, )
(3, )
(10, ? )
100
150
C = n x .50 = .50n or
y = x12
50(1, )
(4, )200
100(2, ) 150(3, )
175(4, )
Slope
50(1, ) 100(2, ) 150(3, )
m =y - y1
x - x1
Equations of Lines
= my - y1
x - x1
y - y1 = m (x - x1)
y - y1 = m (x - x1)
Find the equation of a line passing through the point (2,3), with m = 4
y - 3 = 4 (x - 2)
point - slope
y – 3 = 4x - 8
Solve for y:
y = 4x - 5
y – 3 = 4 (x - 2)
y = mx + b
y = 4x - 5slope - intercept
4x – y = 5
general form
Using linkage, if you know slope, you can reconstruct the other
equations.
-Introduce using familiar language
-Review & Reinforce
-Compare & Contrast
-Teach in different context
Increased Student Achievement
LINKING
Linking
• Fractions
• Decimals
• Percents
Linking
• Pythagorean Theorem
• Distance Formula
• Equation of a Circle
• Trig Identity
Linking
• Special products in algebra
• Special products in arithmetic
Linking
• Quadratic Formula
• Completing the Square
Linking
• Solving Linear Equations
• Order of Operations
Why Linking?
• It’s not a matter of if students are going to forget information, it’s a matter of when. Linking concepts will allow students to reconstruct concepts and skills