Material Masters Investigation Lab ✨ cross-curricular

Teacher: TeacherAI | Grade: 2 | Subject: Reading/ELA, Science, Technology | Duration: 60 minutes

📝 Description: Students use text features to find material facts, identify author's purpose, and conduct hands-on investigations to classify materials by properties.

Standards

2.RI.5 (Know and use various text features to locate key facts or information in a text efficiently)
2.RI.6 (Identify the main purpose of a text, including what the author wants to answer, explain, or describe)
2-PS1-1 (Plan and conduct an investigation to describe and classify different kinds of materials by their observable properties)
2-PS1-2 (Analyze data obtained from testing different materials to determine which materials have the properties that are best suited for an intended purpose)
TECH.2.3.a (Use search tools effectively to find relevant information)

Learning Objectives

Students will be able to:

Use text features (headings, captions, diagrams) to locate facts about material properties
Identify whether an author's purpose is to inform, explain, or describe materials
Conduct investigations to test and classify materials by observable properties (flexible, hard, smooth, rough)
Record investigation data using simple charts and organize findings by material type
Use basic search terms on tablets to find information about everyday objects and their materials

Supplies Needed

Tablets or Chromebooks
White paper
Pencils
Chart paper
Collection of everyday objects (plastic spoon, wooden block, fabric square, metal paperclip, rubber eraser, glass marble - 6 items total)

Lesson Structure

Opening (5 minutes)

Hold up a plastic spoon and wooden block. Ask: "What makes these different? How could we find out more about what they're made of?" Introduce the day's mission: becoming material investigators who use books, technology, and hands-on tests to learn about everyday objects.

Main Activity (50 minutes)

Step-by-step instructions:

Text Feature Hunt (10 minutes): Display simple nonfiction text about materials on tablets (or project sample page). Model finding headings, captions, and diagrams. Have students practice locating facts using these features. Ask: "Why did the author write this - to tell a story or teach us facts?"
Digital Search Practice (10 minutes): In pairs, students use tablets to search "plastic properties" or "wood materials." Teach simple search strategies: use 1-2 key words, look for kid-friendly sites. Students find one fact about their assigned material and share with class.
Investigation Planning (5 minutes): Show the 6 test objects. As a class, brainstorm properties to test: "Is it bendable? Smooth? Hard?" Record ideas on chart paper. Explain students will test each object and record findings.
Hands-On Material Testing (15 minutes): Students work in groups of 3-4. Each group gets all 6 objects and a recording sheet. They test each item by touching, gentle bending (if safe), and observing. Rotate objects every 2-3 minutes to ensure all groups test everything.
Data Recording and Classification (7 minutes): Students complete their Material Investigation Charts, marking properties for each object. Guide them to group materials by similar properties: "Which ones are hard? Which bend easily?"
Share and Connect Findings (3 minutes): Quick gallery walk where students view other groups' charts. Discuss: "Did we all get similar results? What did we learn that matched what we found online?"

Closing (5 minutes)

Students turn to a partner and share one new fact they learned using text features and one discovery from their investigation. Connect back to author's purpose: "Authors who write about materials want to teach us facts, just like we're teaching each other now."

Quick Check: "Point to a heading on your tablet screen. Tell me one property of plastic. Why do authors write books about materials?"

Formative Assessment

During the lesson, look for:

Students accurately pointing to and using text features (headings, captions) to find specific facts
Appropriate search terms being used on tablets and relevant results being identified
Systematic testing of objects with careful observation and accurate recording of properties

Differentiation Strategies

Support for Struggling Students:

Provide recording sheet with pictures of objects and property words already listed
Partner struggling readers with stronger readers for text feature activities
Pre-highlight text features on sample pages for easier identification

Challenge for Advanced Learners:

Have students predict which material would be best for specific jobs (building a house, making a toy) based on their findings
Research additional materials online and add them to the class investigation
Create their own simple text with headings and captions about one material they tested

ELL/ELD Support:

Pre-teach key vocabulary: smooth, rough, flexible, hard, soft, material, property
Use visual property cards with pictures and words during investigations
Encourage native language discussion during partner work, then share findings in English

Printable Materials

Material Investigation Chart

Object	Hard or Soft?	Smooth or Rough?	Bends or Stays Stiff?	What is it made of?
Plastic Spoon	□ Hard □ Soft	□ Smooth □ Rough	□ Bends □ Stiff	________________
Wooden Block	□ Hard □ Soft	□ Smooth □ Rough	□ Bends □ Stiff	________________
Fabric Square	□ Hard □ Soft	□ Smooth □ Rough	□ Bends □ Stiff	________________
Metal Paperclip	□ Hard □ Soft	□ Smooth □ Rough	□ Bends □ Stiff	________________
Rubber Eraser	□ Hard □ Soft	□ Smooth □ Rough	□ Bends □ Stiff	________________
Glass Marble	□ Hard □ Soft	□ Smooth □ Rough	□ Bends □ Stiff	________________

My Discovery: The most interesting thing I learned today was:

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🔧 Teaching Tools