Decimal Expansions of Rational Numbers
Investigating terminating and non-terminating repeating decimal expansions of rational numbers and converting between forms.
About This Topic
Investigating terminating and non-terminating repeating decimal expansions of rational numbers and converting between forms.
Key Questions
- Differentiate between terminating and non-terminating repeating decimals.
- Analyze the process of converting a repeating decimal into a fractional form.
- Justify why all rational numbers have either terminating or repeating decimal expansions.
Active Learning Ideas
See all activities→Activities & Teaching Strategies
See all activities
Planning templates for Mathematics
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
Unit PlannerMath Unit
Plan a multi-week math unit with conceptual coherence: from building number sense and procedural fluency to applying skills in context and developing mathematical reasoning across a connected sequence of lessons.
RubricMath Rubric
Build a math rubric that assesses problem-solving, mathematical reasoning, and communication alongside procedural accuracy, giving students feedback on how they think, not just whether they got the right answer.
More in The Number Continuum
Natural, Whole, and Integers: Foundations
Reviewing the basic number systems and their properties, focusing on their historical development and practical uses.
8 methodologies
Rational Numbers: Representation and Operations
Understanding rational numbers as fractions and decimals, and performing fundamental operations with them.
8 methodologies
Irrationality and Real Numbers
Defining irrational numbers and understanding how they fill the gaps on the number line to create the set of real numbers.
8 methodologies
Locating Irrational Numbers on the Number Line
Constructing geometric representations of irrational numbers like √2, √3, and √5 on the real number line.
8 methodologies
Operations with Real Numbers
Performing addition, subtraction, multiplication, and division with real numbers, including those involving radicals.
8 methodologies
Laws of Exponents and Radicals
Extending the rules of exponents to include rational powers and simplifying complex radical expressions.
8 methodologies