What concepts are covered

The following table lists the concept numbers and names used by the 5-A-Day Online service.  Most concepts also have selectable difficulty levels and may include options of how the concept is presented, so this list should serve as a general reference.  The numbering comes from the Math on the Level Concept Chart, which is the reference for the four teaching guides: Operations, Geometry and Measurements, Money and Decimals, and Fractions.  Any breaks or missing numbers (such as 1-4) identify concepts in the curriculum that do not have 5-A-Day problems, either because the number identifies a reference page or else a very early concept which gets practiced verbally or through activities.  

Operations

5    Sequencing NumbersTh
7    Math Symbols: <, >, =
8    One-digit Addition
9    Multiple-digit Addition (no Regrouping) 
10    Vertical and Horizontal Formats 
11    Adding Three or More Numbers 
12    One-digit Subtraction 
13    Multiple-digit Subtraction (no Regrouping) 
14    Roman Numerals 
15    Addition/Subtraction Relationship
16    Addition with Regrouping
17    Subtraction with Regrouping
18    Variable for the Answer
19    Skip Counting or Singing Multiples
21    One-digit Multiplication (no Regrouping)
22    One-Digit Multiplication (with Regrouping)
23    Multiple-Digit Multiplication
24    Order of Operations
25    Commutative Property
26    Associative Property
27    Different ways to show Multiplication
28    Squares and Exponents
29    Expanded Notation
30    Multiples
31    Primes, Composite Numbers, & Factoring
32    Prime Factorization and Factor Trees
33    Common Factors
34    Adding Positive and Negative Numbers
35    Subtracting Positive and Negative Numbers
36    Dividing into Groups with Manipulatives
37    Simple Division
38    One-Digit Division
39    One-Digit Division (Small Steps)
41    Divisible by Rules or Factor Rules
42    Different Ways to Show Division
43    Checking Division by Multiplying
44    Manipulating Equations
45    Average (or Mean)
46    Mean, Median, Mode and Range
47    Dividing: Two or more Digits in Divisor
48    Repeating Decimals
49    Division: Writing Remainders Three Ways
50    Square Roots
51    Scientific Notation and Powers of Ten
52     The Distributive Property
53    Computing with Powers of 10
54    Multiplying and Dividing Negative Numbers
55    Solving for Variables
56    Graphing Equations

Geometry and Measurements

61    Introducing Metric Units
62    Customary Equivalent Chart (Reference Page)
63    Measuring Length
67    Telling Time
69    Coordinate Planes
70    Geometric Figures
71    Perimeter of a Closed Geometric Figure
72    Area of a Rectangle
73    Volume of a Cube or Rectangular Prism
75    Adding and Subtracting Time
76    Converting Between Customary Units
77    Learning Metric Units
78    Metric/ Customary Conversion (Reference Page)
79    Metric and Customary Unit Conversion
80    The Protractor and Compass
81    Drawing Angles
82    Drawing Shapes
83    Area of a Triangle
84    Area of a Parallelogram
85    Congruent Angles and Proportion
86    Pi and Circumference of a Circle
87    Area of a Circle 
88    Arcs and Sectors
89    Area of a Complex Figure
90    Surface Area of a 3-Dimensional Figure
91    Volume of a Cylinder or Right-angle Prism

Money and Decimals

93    Identifying and Counting Money
94    Add or Subtract with Cent or Dollar Sign
97    Add or Subtract with $ and Decimal Point
98    Add or Subtract with Decimal Point
99    Making Change for Amounts under $1.00
100    Making Change for any Amount
101    Large Numbers, to Billions
102    Multiplying Money
103    Multiplying with Decimals
104    Dividing with $ and Decimal Point
105    Dividing with Decimals
106    Large Numbers to Trillions
107    Rounding and Estimating
108    Place Value (Advanced)
109    Learning and Reading Decimals
110    Percents, Fractions and Decimals
111    Converting Percents, Decimals and Fractions
112    Ordering and Comparing Decimals
113    Add or Subtract Decimals
114    Rounding Decimals
115    Computing Interest
116    Computing Tax

Fractions

123    Fractions: 1/2, 1/3, 1/4, 1/8
124    Fractions: 2/3, 3/4, 3/8, 5/8, and 7/8
125    Add or Subtract Fractions (Like Denom.)
126    Finding Equivalent Fractions
127    Multiplying Fractions
128    Add or Subtract Fractions (unlike Denom.)
129    Comparing Fractions
130    Change Improper Fractions to Mixed Numbers
131    Change Mixed Numbers to Improper Fractions
132    Reducing Fractions to their Simplest Form
133    Adding Mixed Numbers (Like Denom.)
134    Subtracting Mixed Numbers (Like Denom.)
135    Add or Subtract Mixed Numbers (unlike Denom.)
136    Multiplying Mixed Numbers
137    Reciprocals (Multiplicative Inverse)
138    Understanding Ratios and Proportions
139    Cross Products
140    Rates
141    Using Ratios and Proportions
142    Mixed Numbers and the Distributive Property
143    Dividing by Fractions
144    Dividing by Mixed Numbers
145    Multiply or Divide by Converting to Decimals
146    Probability