Adding Multiples of Ten
Students add multiples of 10 to two-digit numbers using concrete models and mental math strategies.
Key Questions
- Explain how adding a multiple of ten only changes the tens digit.
- Predict the outcome when adding 10, 20, or 30 to a given number.
- Design a mental strategy for quickly adding multiples of ten.
Common Core State Standards
About This Topic
Directions and Symbols teaches students the 'language' of maps. By learning the cardinal directions (North, South, East, West) and how to use a map key, children gain the tools to navigate and interpret geographic information. This topic builds logical thinking and the ability to translate symbols into real-world objects.
This unit meets standards for using geographic tools. It moves students from simple picture maps to more formal cartographic representations. This topic is highly interactive, as students can use their own bodies to find directions and create their own symbols for familiar classroom objects.
Active Learning Ideas
Simulation Game: Compass Walk
The teacher labels the four walls of the classroom North, South, East, and West. Students follow 'navigation orders' (e.g., 'Take three steps North, then two steps East') to find a hidden 'treasure' in the room.
Inquiry Circle: Symbol Makers
Small groups are assigned a classroom area (the library, the sink, the rug). They must design a simple symbol to represent that area on a map and explain to the class why their symbol makes sense.
Think-Pair-Share: The Mystery Map Key
Students look at a map key with the labels removed. They work with a partner to guess what each symbol represents based on its shape and color, then check their guesses against the real key.
Watch Out for These Misconceptions
Common MisconceptionNorth is 'up' toward the ceiling.
What to Teach Instead
Explain that North is a direction on the ground toward the North Pole. Using a compass on a flat table helps students see that directions are horizontal, not vertical. Active 'direction hunts' outside can also help ground this concept.
Common MisconceptionMap symbols must look exactly like the real thing.
What to Teach Instead
Show how a simple green circle can represent a whole tree or a blue line can represent a wide river. Active 'symbol simplified' drawing exercises help students understand that symbols are a shorthand code.
Suggested Methodologies
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Frequently Asked Questions
How do I teach North, South, East, and West to 6-year-olds?
Why do maps use keys instead of just writing the words?
How can active learning help students understand map symbols?
What is a compass rose?
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.
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