Examlex
What is the zone of proximal development (ZPD)? What are its lower and upper limits? How would a teacher use peer scaffolding to help children learn mathematics within the zone?
Estimate
An approximation or educated guess regarding the value, quantity, or extent of something, often used for budgeting and planning processes.
High-Low Method
A way to estimate the fixed and variable components of a cost by analyzing the highest and lowest activity levels and their associated costs.
Fixed Cost
Expenses that do not change in proportion to the activity of a business, such as rent, salaries, and loan payments.
Machine Hours
A measure of the amount of time a machine is operated, used in cost accounting to allocate costs to products.
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