<!DOCTYPE html>
<html><head><meta charset="utf-8">
<style>@page { size: 8.5in 11in; margin: 0.5in; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Georgia', serif; color: #1a1a1a; font-size: 12px; line-height: 1.5; }
h1 { font-size: 22px; color: #2e7d32; margin-bottom: 2px; }
h2 { font-size: 13px; color: #555; font-weight: normal; font-style: italic; margin-bottom: 6px; }
h3 { font-size: 14px; color: #2e7d32; margin: 8px 0 4px; page-break-after: avoid; }
.reading-box { background: #e8f5e9; border-left: 5px solid #43a047; border-radius: 0 8px 8px 0; padding: 8px 12px; margin-bottom: 6px; font-size: 11.5px; line-height: 1.35; }
.reading-box p { margin-bottom: 3px; text-indent: 1em; }
.reading-box p:last-child { margin-bottom: 0; }
.answer-line { border-bottom: 1px solid #b0bec5; height: 22px; }
.answer-lines-triple .line-row { border-bottom: 1px solid #b0bec5; height: 18px; }
.activity-box { border: 2px solid #42a5f5; border-radius: 6px; padding: 7px 10px; margin-bottom: 6px; }
.draw-box { border: 2px dashed #42a5f5; border-radius: 6px; height: 70px; background: #fafafa; margin-bottom: 6px; }
.circle-box { display: inline-block; width: 14px; height: 14px; border: 2px solid #42a5f5; border-radius: 50%; margin-right: 3px; vertical-align: middle; }
.wordbank span { background: #e3f2fd; border: 1px solid #42a5f5; border-radius: 4px; padding: 1px 5px; font-size: 10.5px; margin-right: 2px; display: inline-block; margin-bottom: 2px; }
table { width: 100%; border-collapse: collapse; margin-bottom: 6px; font-size: 11px; page-break-inside: avoid; }
th { background: #e8f5e9; color: #2e7d32; padding: 3px 5px; text-align: left; font-size: 10.5px; border: 1px solid #c8e6c9; }
td { padding: 3px 5px; border: 1px solid #e0e0e0; }
tr:nth-child(even) { background: #f9fbe7; }
.page { width: 7.5in; min-height: 10in; position: relative; }
.page + .page { page-break-before: always; }
.vocab-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin-bottom: 6px; }
.vocab-card { border: 2px solid #42a5f5; border-radius: 6px; padding: 4px 7px; }
.vocab-card strong { display: block; color: #1565c0; font-size: 12px; margin-bottom: 2px; }
.vocab-card .line-row { border-bottom: 1px solid #b0bec5; height: 16px; }
.journal-box { border: 2px solid #c9b99a; border-radius: 8px; padding: 8px; min-height: 60px; margin-bottom: 6px; font-size: 11px; }
.journal-line { border-bottom: 1px solid #ccc; height: 20px; }
.group-header { font-size: 13px; font-weight: bold; color: #1565c0; margin: 4px 0 2px; padding: 2px 6px; background: #e3f2fd; border-radius: 4px; display: inline-block; }
.lifecycle-row { display: flex; gap: 8px; align-items: flex-start; margin-bottom: 6px; }
.lifecycle-step { border: 2px solid #42a5f5; border-radius: 8px; padding: 6px; flex: 1; text-align: center; min-height: 70px; }
.lifecycle-step strong { display: block; color: #1565c0; font-size: 11px; }
.arrow { font-size: 24px; color: #42a5f5; line-height: 70px; }
</style></head><body>
<!-- PAGE 1 -->
<div class="page">
<h1>🐜 Invertebrates & Animal Life Cycles</h1>
<h2>Week 30 — Wednesday | Animals Without Backbones</h2>
<h3>📖 Reading Time</h3>
<div class="reading-box">
<p>When you think about all the animals on Earth, vertebrates (animals with backbones) are only a small part of the story. <strong>Invertebrates</strong> are animals that do NOT have a backbone, and they make up about <strong>97% of all animal species</strong> on Earth! That's right — there are far more kinds of animals without backbones than with them. Invertebrates include insects, spiders, worms, jellyfish, octopus, clams, starfish, and many more.</p>
<p><strong>Insects</strong> are the largest group of invertebrates. They have six legs, three body parts (head, thorax, abdomen), and most have wings. There are over 1 million known species of insects! Ants, bees, butterflies, beetles, grasshoppers, and flies are all insects. Insects have an <strong>exoskeleton</strong> — a hard outer shell that protects their body instead of an internal skeleton. Some insects go through <strong>complete metamorphosis</strong> (egg → larva → pupa → adult), while others go through <strong>incomplete metamorphosis</strong> (egg → nymph → adult).</p>
<p><strong>Arachnids</strong> are another invertebrate group. They have eight legs and two body parts (cephalothorax and abdomen). Spiders, scorpions, ticks, and mites are arachnids. Unlike insects, arachnids do NOT have antennae or wings. Most spiders produce silk to build webs for catching prey. Only a tiny fraction of spider species are dangerous to humans — most are actually helpful because they eat pests!</p>
<p><strong>Other invertebrates</strong> include <strong>crustaceans</strong> (crabs, lobsters, shrimp) with hard shells, <strong>mollusks</strong> (snails, clams, octopus, squid) with soft bodies, and <strong>annelids</strong> (earthworms) with segmented bodies. <strong>Echinoderms</strong> (starfish, sea urchins, sand dollars) have a water vascular system that helps them move and catch food. <strong>Cnidarians</strong> (jellyfish, corals, sea anemones) have stinging cells called <strong>cnidocytes</strong> that they use to catch prey.</p>
</div>
<h3>✏️ Reading Questions</h3>
<p><strong>1. What percentage of animal species are invertebrates?</strong></p>
<div class="answer-line"></div>
<p><strong>2. How many legs do insects have? How many legs do arachnids have?</strong></p>
<div class="answer-line"></div>
<p><strong>3. What is an exoskeleton and how is it different from a backbone?</strong></p>
<div class="answer-line"></div>
<p><strong>4. Explain the difference between complete and incomplete metamorphosis. Give an example of each.</strong></p>
<div class="answer-lines-triple">
<div class="line-row"></div>
<div class="line-row"></div>
<div class="line-row"></div>
</div>
<h3>📝 Vocabulary Grid</h3>
<div class="vocab-grid">
<div class="vocab-card"><strong>🐜 Invertebrate</strong><div class="line-row"></div></div>
<div class="vocab-card"><strong>🦴 Exoskeleton</strong><div class="line-row"></div></div>
<div class="vocab-card"><strong>🦋 Metamorphosis</strong><div class="line-row"></div></div>
<div class="vocab-card"><strong>🕷️ Arachnid</strong><div class="line-row"></div></div>
<div class="vocab-card"><strong>🦐 Crustacean</strong><div class="line-row"></div></div>
<div class="vocab-card"><strong>🐙 Mollusk</strong><div class="line-row"></div></div>
</div>
</div>
<!-- PAGE 2 -->
<div class="page">
<h3>🔄 Animal Life Cycles</h3>
<p><strong>Butterfly Life Cycle — Complete Metamorphosis</strong></p>
<div class="lifecycle-row">
<div class="lifecycle-step"><strong>Egg</strong><div style="height: 40px;"></div><em>Tiny egg laid on a leaf</em></div>
<div class="arrow">→</div>
<div class="lifecycle-step"><strong>Larva (Caterpillar)</strong><div style="height: 40px;"></div><em>Eats leaves and grows</em></div>
<div class="arrow">→</div>
<div class="lifecycle-step"><strong>Pupa (Chrysalis)</strong><div style="height: 40px;"></div><em>Transforms inside</em></div>
<div class="arrow">→</div>
<div class="lifecycle-step"><strong>Adult Butterfly</strong><div style="height: 40px;"></div><em>Flies, finds food & mates</em></div>
</div>
<p><strong>Frog Life Cycle — Metamorphosis</strong></p>
<div class="lifecycle-row">
<div class="lifecycle-step"><strong>Eggs</strong><div style="height: 40px;"></div><em>Jelly-like mass in water</em></div>
<div class="arrow">→</div>
<div class="lifecycle-step"><strong>Tadpole</strong><div style="height: 40px;"></div><em>Swims with a tail, breathes with gills</em></div>
<div class="arrow">→</div>
<div class="lifecycle-step"><strong>Froglet</strong><div style="height: 40px;"></div><em>Legs grow, tail shrinks</em></div>
<div class="arrow">→</div>
<div class="lifecycle-step"><strong>Adult Frog</strong><div style="height: 40px;"></div><em>Living on land, breathes with lungs</em></div>
</div>
<h3>📊 Vertebrate vs. Invertebrate Comparison</h3>
<table>
<tr><th style="width: 180px;">Feature</th><th>Vertebrates</th><th>Invertebrates</th></tr>
<tr><td>Backbone</td><td style="height: 22px;">Yes</td><td>No</td></tr>
<tr><td>Body type</td><td></td><td></td></tr>
<tr><td>Skeleton</td><td></td><td></td></tr>
<tr><td>Examples</td><td></td><td></td></tr>
<tr><td>Number of species</td><td></td><td></td></tr>
<tr><td>Size range</td><td></td><td></td></tr>
</table>
<h3>🔍 Insect or Not an Insect?</h3>
<p><strong>Write YES if it's an insect, NO if it's not. Explain why.</strong></p>
<table>
<tr><th style="width: 200px;">Animal</th><th>Insect? (YES/NO)</th><th>Why?</th></tr>
<tr><td>Butterfly</td><td style="height: 22px;"></td><td></td></tr>
<tr><td>Spider</td><td></td><td></td></tr>
<tr><td>Beetle</td><td></td><td></td></tr>
<tr><td>Scorpion</td><td></td><td></td></tr>
<tr><td>Ant</td><td></td><td></td></tr>
<tr><td>Centipede</td><td></td><td></td></tr>
<tr><td>Grasshopper</td><td></td><td></td></tr>
<tr><td>Tick</td><td></td><td></td></tr>
</table>
</div>
<!-- PAGE 3 -->
<div class="page">
<h3>🎨 Draw a Butterfly Life Cycle</h3>
<p><strong>Draw each stage of the butterfly life cycle. Label each stage.</strong></p>
<div class="draw-box" style="height: 120px;"></div>
<h3>🧪 Mini Investigation: Earthworm Observation</h3>
<p><strong>Materials:</strong> An earthworm (ask an adult to help!), a magnifying glass, a damp paper towel, a plastic container with holes in the lid.</p>
<p><strong>Steps:</strong></p>
<p>1. Place the damp paper towel in the container and gently set the earthworm on top.</p>
<p>2. Observe the earthworm for 5 minutes. Draw what you see.</p>
<p>3. Notice how it moves — does it use legs? How does it move without legs?</p>
<p>4. Gently touch the earthworm and note its reaction.</p>
<p>5. After observing, return the earthworm to damp soil outside.</p>
<p><strong>Draw your earthworm and label what you can see:</strong></p>
<div class="draw-box" style="height: 100px;"></div>
<p><strong>Observations:</strong></p>
<p>1. How does the earthworm move? ______________________________________________</p>
<p>2. What did you notice about its skin? __________________________________________</p>
<p>3. Earthworms are ________________ (vertebrate/invertebrate). Why? ______________</p>
<h3>💭 Think About It</h3>
<p><strong>If invertebrates make up 97% of all animal species, why do people usually think about vertebrates more? Do you think invertebrates are important? Explain.</strong></p>
<div class="answer-lines-triple">
<div class="line-row"></div>
<div class="line-row"></div>
<div class="line-row"></div>
</div>
</div>
</body></html>