Grade 4 Science Review Materials, Lessons 1-4

This section provides an enhanced review structure and detailed PowerPoint content designed for an interactive 45-minute review session with a Grade 4 bilingual student in Thailand.

To check out the PPT in PDF, please click here: Living Things & Flowering Plants: A Review

To check out your understanding, please click on the Quiz: Quiz Link

1. Review Study Guide

Introduction

●       Welcome! Today we'll review everything amazing we learned about Living Things, Plants, Roots, Stems, Leaves, Flowers, and Fruits!

●       Remember Noi the explorer and Pho the elephant? We're going on a review adventure!

Topic 1: Living Things Around Us (สิ่งมีชีวิตรอบตัวเรา)

●       Recall: What makes something "living"? (Needs food/water, grows, reproduces).

●       Activity: Quick sort - Show pictures (or names) of a rock, a bird (นก), a mushroom (เห็ด), a bicycle. Ask: Living or Non-living? Why?

●       Three Kingdoms: Briefly remind of Plants (make food), Animals (eat food, move), Others (decomposers like mushrooms). Ask: Can you name one Thai example for each?

●       Animal Groups: Focus on Vertebrates (มีกระดูกสันหลัง) vs. Invertebrates (ไม่มีกระดูกสันหลัง). Ask: What's the big difference? (Backbone!)

●       Quick Quiz: Name the 5 vertebrate groups. Show pictures/icons as prompts. (Fish, Amphibian, Reptile, Bird, Mammal). Ask: What group does a ช้าง belong to? A กบ? A นกเงือก?

Topic 2: Flowering Plants - The Big Picture (พืชดอก - ภาพรวม)

●       Recall: What are the main parts of a flowering plant we learned about? Prompt: Think from bottom to top! (Roots, Stem, Leaves, Flower, Fruit, Seed).

●       Connect: Each part has a special job to help the plant live and grow!

Topic 3: Amazing Roots! (รากมหัศจรรย์)

●       Main Jobs: What are the main things roots do? (Anchor, Absorb water/minerals). Show a picture of a plant being pulled – roots hold it! Show water going into soil.

●       Activity: Root Type Match-Up!

○       Show pictures/simple drawings of: Carrot (แครอท), Rice plant roots (รากข้าว), Orchid roots (รากกล้วยไม้), Mangrove roots (รากโกงกาง).

○       Ask: Which one is a Storage Root (stores food)? Which is Fibrous (like a net)? Which is Aerial (in the air)? Which is a Prop Root (for support)? Briefly explain why for each.

○       Mention Taproot (รากแก้ว) vs. Fibrous (รากฝอย) as the two main systems.

Topic 4: Super Stems! (ลำต้นสุดยอด!)

●       Main Jobs: What are the stem's two big jobs? (Support, Transport). Hold up a flower – the stem supports it!

●       Transport: Remember the "highway"? What travels UP (Water - Xylem)? What travels DOWN/AROUND (Food - Phloem)? Use hand gestures: Up for Xylem, Down/Around for Phloem.

●       Activity: Stem Type Spotting!

○       Show pictures of: A tall Teak tree (ต้นสัก), an Ixora bush (ต้นเข็ม), a Marigold plant (ต้นดาวเรือง).

○       Ask: Which is a Tree (ไม้ต้น)? A Shrub (ไม้พุ่ม)? An Herb (ไม้ล้มลุก)? Discuss: What's the difference? (Woody vs. soft, single trunk vs. many stems).

Topic 5: Lovely Leaves! (ใบไม้สวยจัง!)

●       Main Job: What super important process happens in leaves? (Photosynthesis - making food!). What does it need? (Sunlight, Water, Air/CO2).

●       Breathing: How do leaves "breathe"? (Stomata/ปากใบ). What gas do they take in? (CO2). What gas do they release (important for us!)? (O2).

●       Activity: Look at a real leaf (if possible) or a clear picture. Point out the Blade (แผ่นใบ) and Veins (เส้นใบ). Ask: What travels in the veins? (Water and food!).

Topic 6: Fantastic Flowers & Pollination! (ดอกไม้น่าทึ่ง & การผสมเกสร!)

●       Main Job: Why are flowers important? (Reproduction - making seeds!).

●       Attracting Help: How do they get help? (Bright petals/กลีบดอก, nice smells attract pollinators like bees/ผึ้ง).

●       Parts: Briefly point out male (Stamen/เกสรเพศผู้ - makes pollen) and female (Carpel/Pistil/เกสรเพศเมีย - receives pollen, has ovary/รังไข่). Use a large flower diagram.

●       Pollination: What is it? (Pollen moving from anther to stigma). Show simple diagram of bee transferring pollen. Briefly mention self vs. cross.

Topic 7: Fruity Fun & Super Seeds! (ผลไม้สนุก & เมล็ดสุดยอด!)

●       Connection: Where does the fruit come from? (The flower's ovary/รังไข่!).

●       Jobs: What does the fruit do? (Protect seeds, Help seeds travel/Dispersal).

●       Activity: Seed Travel Agents! How do seeds travel? Ask for examples. (Animals eat fruit - poop seeds! Wind blows light seeds! Water carries floating fruits like coconuts/มะพร้าว!).

Topic 8: Experiment Recap (ทบทวนการทดลอง)

●       Quickly remind of the celery experiment. What did it show us? (Water travels UP the stem in the XYLEM).