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Piaget's Stage 3 of Cognitive Development01:17

Piaget's Stage 3 of Cognitive Development

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During Piaget's concrete operational stage, from ages 7 to 11, children exhibit a marked increase in logical thinking skills, specifically in relation to tangible, real-world events. This stage is characterized by the development of several essential cognitive concepts, including conservation, reversibility, and classification, all of which support the child's evolving capacity for structured thought.
Conservation and Constancy of Quantity
A significant cognitive milestone in the...
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Piaget's Stage 1 of Cognitive Development01:14

Piaget's Stage 1 of Cognitive Development

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The sensorimotor stage, the initial phase of Jean Piaget's theory of cognitive development, spans the first two years of a child's life. During this period, infants actively engage with their surroundings, building cognitive awareness through direct interaction with the world. This interaction is primarily based on sensory perception and motor actions, allowing infants to gradually understand basic physical properties and predict how objects interact within their environment.
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Piaget's Stage 2 of Cognitive Development01:14

Piaget's Stage 2 of Cognitive Development

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The preoperational stage, the second of Jean Piaget's four stages of cognitive development, spans approximately ages 2 to 7 and is characterized by the emergence of symbolic thinking. During this stage, children use language, images, and symbols to represent objects and concepts, enabling them to engage in imaginative and pretend play. This symbolic thinking supports children's ability to perform make-believe actions, such as imagining a broom as a horse or their hand as a phone, blending...
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Piaget's Stage 4 of Cognitive Development01:19

Piaget's Stage 4 of Cognitive Development

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The formal operational stage, as described in Piaget's cognitive development theory, begins around age 11 and extends into adulthood. It marks the emergence of advanced cognitive abilities that differentiate adolescent and adult thinking from those of younger children. This stage is characterized by abstract reasoning, hypothetical-deductive reasoning, and a more complex understanding of self and others.
Abstract Reasoning and Hypothetical-Deductive Thinking
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Group Design02:01

Group Design

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The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between...
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Factorial Design02:01

Factorial Design

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Factorial Analysis is an experimental design that applies Analysis of Variance (ANOVA) statistical procedures to examine a change in a dependent variable due to more than one independent variable, also known as factors. Changes in worker productivity can be reasoned, for example, to be influenced by salary and other conditions, such as skill level. One way to test this hypothesis is by categorizing salary into three levels (low, moderate, and high) and skills sets into two levels (entry level...
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Related Experiment Video

Updated: Jan 31, 2026

Design and Development of a Three-Dimensionally Printed Microscope Mask Alignment Adapter for the Fabrication of Multilayer Microfluidic Devices
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Design and Development of a Three-Dimensionally Printed Microscope Mask Alignment Adapter for the Fabrication of Multilayer Microfluidic Devices

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A programmable microscopic stage: Design and development.

R Dinesh Jackson Samuel1, B Rajesh Kanna1

  • 1School of Computing Science and Engineering, Vellore Institute of Technology, Chennai, Tamil Nadu, India.

Microscopy Research and Technique
|December 22, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces a programmable system for automated microscope stage scanning, enabling custom paths without human intervention. This innovation enhances efficiency and reduces errors in pathological screening.

Keywords:
automated microscopic stagemicro-CNCspecimen screeningwhole slide imaging

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Area of Science:

  • Pathology
  • Microscopy
  • Automation Engineering

Background:

  • Motorized microscopes facilitate slide imaging but require manual intervention for scanning patterns.
  • Current methods can be time-consuming and may miss areas of the specimen.
  • Human intervention during screening leads to delays and potential omissions.

Purpose of the Study:

  • To develop a programmable framework for customized, automated microscope stage scanning.
  • To eliminate human intervention during the complete screening process.
  • To enhance the precision and efficiency of pathological slide examination.

Main Methods:

  • Implementation of a programmable framework and firmware for microscopic stage control.
  • User-defined scanning patterns using 2D graphics drawing primitives.
  • Conversion of patterns into machine-readable codes via micro-computer numeric controlled software for precise stage movement using servo drives and motors.

Main Results:

  • A cost-effective, portable system for automated, customized microscopic slide scanning was developed.
  • The system reduces reliance on technicians for whole slide examination.
  • Pre-defined scanning patterns were successfully tested and validated for stage movement accuracy.

Conclusions:

  • The proposed system enables fully automated and customizable scanning of microscopic specimens.
  • This automation improves efficiency, reduces errors, and increases accessibility in pathological studies.
  • The system's portability allows integration with various microscope types, including conventional and fluorescence models.