In modern usage science most often refers to a way of pursuing knowledge, not only the knowledge itself. In the 17th and 18th centuries scientists increasingly sought to formulate knowledge in terms of laws of nature.
https://en.wikipedia.org/wiki/Science
Introduction Hands-on learning experiences are key to the development of skills and the tying together of practical and theory. Good quality practical work can not only engage students with the processes of scientiﬁ c enquiry, but also communicate the excitement and wonder of the subject.
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In the West during the early modern period the term Science and  Natural Philosophy  were sometimes used interchangeably to refer to the study of natural phenomena, and until the 19th century, natural philosophy (which is today called  natural science ) was considered a branch of philosophy.
https://en.wikipedia.org/wiki/Science
Take about 4 g of steel wool and tease it out so that the air can get around it easily. Use a few of the strands to attach it to the end of the ruler. b Balance the ruler on a knife edge or triangular block at the 50 cm mark. Weight the empty end with plasticine until this end is just down (see the diagram). This part is critical.
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They can also be used to demonstrate the applications of chemistry, increasing its relevance to students. Practical work is vital in the development of students’ skills of manipulating and handling apparatus and data, working with others, and scientiﬁ c enquiry.
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Chemistry is about the study of atoms, how they interact, the structures they form and the materials they make. Practical activities provide opportunities for students to explore the chemistry of materials, and observe patterns in reactions.
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Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. In an older and closely related meaning, science also refers to this body of knowledge itself, of the type that can be rationally explained and reliably applied. Ever since classical antiquity, science as a type of knowledge has been closely linked to philosophy.
https://en.wikipedia.org/wiki/Science
Making a cardboard aeroplane in physics, colourful and explosive experiments in chemistry, looking at the intricate structure of plants and bodies down a microscope in biology. Above all, science is a practical subject.
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www.practicalphysics.org 49d Did everybody make measurements with the same precision? For example, did everybody make measurements using tenths of seconds (0.1 second is a tenth of a second) or hundredths of seconds (0.01 seconds is a hundredth of a second).
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Encourage rinsing of equipment to decrease cross contamination of colours.At the end the teacher can do a quick accuracy check, each test tube should end up with the same amount, 9 ml. A more precise ‘quick check’ can be done by pouring all the colours in a graduated cylinder. The total should add to 54 ml.
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what is practical science activities
Practical work is vital in the development of students’ skills of manipulating and handling apparatus and data, working with others, and scientiﬁc inquiry.