https://www.khanacademy.org/science/grade-4-science-pakistan-national-curriculum/xd6642c7f392cd435:animal-structure-and-function/xd6642c7f392cd435:classification-of-animals/v/classification-of-animals-vertebrates-and-invertebrates-introductory 2026-07-02T12:10:59.912898911Z Classification of Animals: Vertebrates and Invertebrates - Introductory Classification of Animals: Vertebrates and Invertebrates - Introductory Khan Academy Pakistan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Classification of Animals: Vertebrates and Invertebrates - Introductory Classification of Animals: Vertebrates and Invertebrates - Introductory https://cdn.kastatic.org/ka-youtube-converted/nbEsTKF5sOY.mp4/nbEsTKF5sOY.mp4 166 Classification of animals https://www.khanacademy.org/science/grade-4-science-pakistan-national-curriculum/xd6642c7f392cd435:animal-structure-and-function/xd6642c7f392cd435:classification-of-animals/v/animals-having-exoskeleton-examples-spider-crab-beetles 2026-07-02T12:10:59.912898911Z Animals having Exoskeleton: Examples- spider, crab, beetles Animals having Exoskeleton: Examples- spider, crab, beetles Khan Academy Pakistan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Animals having Exoskeleton: Examples- spider, crab, beetles Animals having Exoskeleton: Examples- spider, crab, beetles https://cdn.kastatic.org/ka-youtube-converted/pCHAzuhGkbo.mp4/pCHAzuhGkbo.mp4 148 Classification of animals https://www.khanacademy.org/science/grade-4-science-pakistan-national-curriculum/xd6642c7f392cd435:animal-structure-and-function/xd6642c7f392cd435:classification-of-animals/e/classifying-animals-vertebrates-and-invertebrates-based-on-their-characteristics 2026-07-06T04:40:49.22516192Z Classifying Animals: Vertebrates and Invertebrates Based on Their Characteristics This exercise is designed to assess and reinforce student understanding of animal classification. It tests a learner's ability to categorize animals as vertebrates or invertebrates and further distinguish them by their distinctive physical traits, body coverings, and structural properties. Sumera Anjum exercise