How do human bone models select sizes?

When it comes to choosing the size of the bone model, many people talk to me about it, and they take out the ruler, and they look at it like they're measuring clothes. It's actually a little more complicated than buying shoes.——As long as the shoes are right, the rest are comfortable; the skeletal models, in addition to "long," have to look at "width flexibility" and "show demand."

Look at the eyes. Don't be blind.

Put the form on the table, first pick a "close" against the child's height, but leave room. For example, a student 150 cm tall, 65 cm model would look a little short, and 85 cm would just make the details clearer.

Key points. Don't focus on numbers.

• The joint can be removed.: If the model can be de-assembled on its own, slightly larger sizes are not afraid to occupy the floor, it can also be shown.
• Material thickness: The thinness of plastics has a direct impact on the weight, and the slight weight is more stable in the model hand, but it is tired of moving around.
• ShowspaceThere's only one small table in the corner of the classroom, a 120-cm model that flattens the table directly; it's a little bit cheaper at this point.
• BudgetThe larger the size, the higher the cost. A list of the budget would be useful to see whether the money was spent on sizes or whether it would be more cost-effective to buy accompanying teaching accessories.

It's real. It's the best.

Last week I saw a teacher taking the kids to the stationery store to pick up the model, and the kids were spinning around the 85 cm model, with their fingers on their knees and saying, "This is as long as my leg." The teacher smiled and moved the model to the front of the classroom, where the entire class was standing next to each other. It turns out that the model is slightly higher than the actual knee of the children, about 2 cm, and that it just happens to see the internal structure of the joint, but it doesn't make you feel like a giant. This "field experiment" made the teacher decide to buy this right away.

Small techniques: Put the model on the ground, measure it by a rope from the bottom to the top of the head, and do it in proportion to the height of the child, about 1:1.8, which is the most natural.

Don't forget, sizes aren't all done once. New teaching materials have been changed during the semester, or they may have to be presented to another grade. Put "removable sizes" on the list of purchases so that we don't have time for this.

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So, the skeletal skeletal model is the same as the clothes.——It's comfy, comfortable, showable. As long as three points of height, joint demand and classroom space are balanced, the size is naturally not under the word. It's up to you.