February 2, 2026 | E-Learning Day | 90 minutes | Grade 9

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IB MYP Mathematics Phase 4 Alignment

• MYP Criterion C: Communicating - Students are expected to communicate mathematical ideas clearly and confidently through multiple modes, including symbolic, graphic, and contextual representations.
• Standard A1.FIF.1 (Common Core aligned within IB curriculum): Understand and use function notation, interpret functions as rules mapping inputs to outputs.

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Learning Objectives

By the end of this session, students will be able to:

• I can explain what function notation represents in real-world situations.
• I can interpret and describe the meaning of function values within a context.
• I can connect symbolic function notation to input-output relationships through multiple representations (tables, graphs, and situational contexts).

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Essential Question

What does function notation represent in context?

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Materials Needed

• Chromebooks or tablets with internet and video conferencing capabilities
• Digital whiteboard (Jamboard, Google Slides, or equivalent)
• Interactive graphing software/app (Desmos or similar)
• Pre-prepared function input-output tables (digital worksheet)
• Breakout room access for group discussions
• Formative assessment quiz tool (Google Forms or equivalent)

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Lesson Breakdown

Time	Activity	Details and Instructions
0-10 min	Welcome & Launch: Activate Prior Knowledge	- Teacher welcomes students and introduces the essential question on the digital whiteboard. - Quick brainstorming: In chat or on a shared board, students list examples of “functions” or “input-output” relationships they know from daily life (e.g., vending machines, recipes, phone dialing code). - Teacher briefly connects this to function notation, highlighting it’s a way to represent those relationships mathematically.
10-25 min	Teacher-Led Mini Lecture: Introduction to Function Notation	- Using a shared digital slide deck, teacher explains: 1. Definition of function in IB context: A rule assigning exactly one output to each input. 2. Introduction to notation f(x) and interpretation as “the value of the function f at input x.” 3. Example: f(x) = 2x + 3, describing what the notation and function values mean in words. - Use visual animations showing input going into a "machine" labeled f, producing an output. - Students answer “check-for-understanding” questions via chat/poll (e.g., What is f(4) if f(x) = 2x + 3?).
25-45 min	Interactive Activity: Function Notation in Real-World Contexts	- Present 3 real-world scenarios (cost of phone plans, temperature conversions, simple physics formulas). - Students work individually in a digital worksheet to: • Write functions in notation form. • Calculate specific values. • Interpret outputs in context. - Students post one interpretation or connection in the discussion board. - Teacher monitors, provides timely feedback.
45-55 min	Breakout Room Collaborative Activity: Input-Output Tables & Function Graphs	- Students are divided into groups of 4-5. - Each group receives an input-output table representing a function. - Using Desmos or built-in graphing tool, they: • Graph the function. • Express the function rule symbolically (e.g., f(x) = ...). • Discuss how the symbolic function relates to the table and graph. - Each group prepares a 2-3 sentence summary to share.
55-65 min	Group Sharing & Teacher Facilitation	- Groups return to main room. - Each group shares their summary verbally or through chat. - Teacher highlights key points connecting symbolic, graphical, and tabular representations and reinforces real-world relevance aligned with IB emphasis on connections.
65-80 min	Formative Assessment: Function Notation Fluency Check	- Students complete a short online quiz (10 questions, multiple choice and short answer) that tests: • Evaluating functions at given inputs. • Writing functions from given contexts. • Interpreting function notation in real-world terms. - Instant feedback given through the platform. - Teacher reviews common errors and clarifies misconceptions live.
80-90 min	Reflect & Consolidate: Exit Ticket & Meta-Cognitive Discussion	- Students submit a 3-4 sentence reflection answering: “How does function notation help us understand relationships between quantities, and why is this useful in real life?” - Teacher posts a reflective prompt in the class chat. - Optionally, a few students share responses aloud. - Teacher closes by linking the lesson to upcoming topics in function families and modeling.

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Homework / Extension

• Students research and identify another real-world example of a function (e.g., gas prices, nutrition facts) and represent it with function notation, including inputs, outputs, and an interpretation paragraph to submit digitally.

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IB MYP Approaches to Learning (ATL) Linked

• Thinking Skills: Critical thinking in interpreting and representing functions in context.
• Communication Skills: Using symbolic, graphical, tabular, and written forms to express mathematical ideas clearly.
• Self-management Skills: Time management of independent and group e-learning activities.
• Collaboration Skills: Sharing and discussing mathematical reasoning within breakout groups.

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Differentiation and Inclusion

• Provide a scaffolded version of the input-output table for students who need additional support.
• Challenge advanced learners with more complex function forms (e.g., piecewise or quadratic) during breakout sessions for extension.
• Use closed captions and visual aids for accessibility.
• Encourage students to express ideas in their preferred modality (written, oral, typed).

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Teacher Reflection Notes (Post-Lesson)

• Note student engagement levels during breakout discussions.
  - Identify common misconceptions from formative assessment.
  - Adjust future lessons to include more contextual applications of function notation as per student interests.

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This detailed, e-learning optimized lesson plan integrates core IB values by promoting inquiry into mathematical language and relationships, emphasizing real-world connection, and supporting diverse learners through interactive and multimodal approaches.