1, tape measure is the most common and widely used. Ordinary families will buy this ruler, which is more convenient and can be used to measure the size of rooms, furniture and other items.
2, ruler, ruler is generally made of plastic, wood and stainless steel, widely used. Rules of marking tools, such as whether the angles of straightedge, square and oblique ruler are correct.
3. Triangular ruler, which can be divided into square ruler and isosceles triangular ruler, is often used for geometric drawing, and designers generally use it more.
4, protractor, protractor is a special ruler, can be used to measure the size of an angle, often used in engineering drawings. Can be used to measure different angles.
5, soft ruler, soft ruler is also relatively easy to see in life, such as when measuring. The soft ruler is not affected by the shape of the object when measuring the length, and can measure the surface length of irregular objects.
6, vernier caliper, can be used to measure smaller things, the data is more accurate. Vernier calipers are usually used to measure workpieces with high precision. It can measure the inside and outside diameter, length, width and depth of parts. ?
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The school supplies for second-year students mainly include stationery, books and schoolbags, which are described as follows:
First, stationery:
Pencil is one of the most commonly used writing tools for students. You can choose a lead core with moderate hardness to facilitate writing and erasing. Senior two students gradually begin to write with pens, which can improve the standardization and aesthetics of writing.
Colored pencils can be used to draw and color, enriching students' creativity and imagination. Erasers are used to erase wrong handwriting. Choose an eraser that is soft and not easy to leave traces. Rulers are used to measure length and draw straight lines. Choose a transparent ruler with clear scale.
Second, books:
Grade two students will use textbooks on various subjects, including Chinese, mathematics and English. Purchase corresponding teaching materials according to the requirements of the school. Picture books are an important tool to help students cultivate their reading interest and improve their reading ability. You can choose a picture book suitable for junior two students to read.
Workbooks are important auxiliary materials to consolidate learning knowledge and exercise topics. Purchase corresponding workbooks according to the requirements of the school. Storybook is an important resource to help students expand their reading content and cultivate their imagination. You can choose a story book suitable for junior two students.
Third, the schoolbag:
Choosing a schoolbag suitable for senior two students should consider factors such as moderate size, comfortable carrying, reasonable structure and durable quality. You can choose backpack system, multi-layer and waterproof schoolbag.
Pencil boxes are used to store pencils, erasers, rulers and other stationery. Choose a pencil box with appropriate size and reasonable structure. Senior two students need to carry a water cup with them, and choose a water cup that meets the hygiene requirements and has a moderate capacity.
Fourth, other supplies:
With the development of science and technology, some schools begin to use electronic devices as learning tools, such as tablet computers or e-readers. Therefore, the choice of specific school supplies needs to be carried out according to school requirements and personal needs.
When buying school supplies, you can choose environmentally friendly, non-toxic and durable products, pay attention to protecting students' eyes and health, and choose school supplies that suit you.