Here is a list of science skills students learn in second grade! These skills are organized into categories, and you can move your mouse over any skill name to preview the skill. To start practicing, just click on any link. Smart Child Zone will track your score, and you will get immediate feedback as you practice!
1. Subtraction
- Subtract numbers up to five digits: word problems
Skill Preview
- Subtract numbers up to seven digits: word problems
Skill Preview
- Estimate differences: word problems
Skill Preview
2. Number sense
- Convert between standard and expanded form
Skill Preview
- Value of a digit
Skill Preview
- Place value models
Skill Preview
- New! Relationship between place values
Skill Preview
- Convert between place values
Skill Preview
- Identify place value names
Skill Preview
- Writing numbers up to 1,000 in words: convert digits to words
Skill Preview
- Writing numbers up to 100,000 in words: convert digits to words
Skill Preview
- Writing numbers up to one million in words: convert digits to words
Skill Preview
3. Addition
- Add two numbers up to five digits: word problems
Skill Preview
- Add two numbers up to seven digits: word problems
Skill Preview
- Properties of addition
Skill Preview
- Estimate sums
Skill Preview
- Estimate sums: word problems
Skill Preview
4. Two-dimensional figures
- Open and closed shapes
Skill Preview
- Is it a polygon?
Skill Preview
- Number of sides in polygons
Skill Preview
- Lines, line segments, and rays
Skill Preview
- Parallel, perpendicular, and intersecting lines
Skill Preview
5. Multiplication
- Multiplication facts to 10
Skill Preview
- Multiplication facts up to 10: find the missing factor
Skill Preview
- Choose the multiples of a given number up to 10
Skill Preview
6. Variable expressions
- Write variable expressions
Skill Preview
- Write variable expressions: word problems
Skill Preview
- Evaluate variable expressions
Skill Preview
- Write variable equations to represent word problems
Skill Preview
7. Logical reasoning
- Find the order
Skill Preview
- Place value word problems
Skill Preview
8. Triangles and quadrilaterals
- Acute, obtuse, and right triangles
Skill Preview
- Scalene, isosceles, and equilateral triangles
Skill Preview
- Identify trapezoids
Skill Preview
- Identify parallelograms
Skill Preview
- Parallel sides in quadrilaterals
Skill Preview
- Classify triangles
Skill Preview
- Identify rhombuses
Skill Preview
- Identify rectangles
Skill Preview
- Classify quadrilaterals
Skill Preview
9. Symmetry
- Identify lines of symmetry
Skill Preview
- Count lines of symmetry
Skill Preview
- Rotational symmetry
Skill Preview
10. Probability and statistics
- Understanding probability
Skill Preview
- Find the probability
Skill Preview
- Make predictions
Skill Preview
- Find the mode
Skill Preview
- Find the mean
Skill Preview
- Find the median
Skill Preview
- Find the range
Skill Preview