Electronic Calculation Practice System with OCR Answer Correction

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Solution Overview

Problem

Students' calculation practices in mathematics education primarily rely on paper-based methods, lacking integration with computer technology, which is inefficient and burdensome for both students and teachers.

Innovation Solution

A calculation practicing method and system that uses an electronic device to provide calculation questions, identify question types, generate answer areas, receive user inputs, and determine correct answers, optionally displaying correct answers alongside incorrect ones, with features like vertical calculation formulas and character filling cells, utilizing neural network models for question identification and answer processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If paper-based calculation practice is used, then students can perform calculations, but the process is inefficient and burdensome for both students and teachers

Engineering Contradiction:
Improvecalculation practice efficiencyVSAvoidtime for manual correction
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent replaces the mechanical paper-based system with an electronic device-based system. The electronic device captures images of student answers, uses OCR technology to recognize handwritten content, and automatically compares it with standard answers, eliminating the need for manual paper correction and significantly improving efficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-service correction by automatically capturing student answers through image recognition, identifying the content, comparing it with standard answers, and providing correction results without teacher intervention. This allows students to receive immediate feedback and self-correct their work.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If manual correction is performed, then teachers can provide feedback, but the workload is excessive and time-consuming

Engineering Contradiction:
Improveteacher workloadVSAvoidtime for answer correction
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent replaces the manual correction process with an automated electronic system. The device captures answer images, uses OCR to recognize content, automatically compares answers with standard solutions, and generates correction feedback, completely eliminating the need for teachers to manually review and correct each student's work.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system introduces an intermediary automated correction mechanism between the student's answer and the teacher. The electronic device with OCR and comparison algorithms serves as the mediator that handles the time-consuming correction task, allowing teachers to focus on more valuable instructional activities.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If paper-based practice is used, then students can write answers, but immediate feedback is not provided and learning efficiency is reduced

Engineering Contradiction:
Improvelearning effectivenessVSAvoidtime for feedback delivery
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent implements immediate automated feedback by capturing the student's answer image, recognizing the content through OCR, comparing it with the standard answer, and providing correction results instantly. This closed-loop feedback system allows students to immediately understand their mistakes and learn from them, significantly improving learning effectiveness.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system maintains continuous useful action by providing uninterrupted immediate feedback rather than delayed batch correction. The automated capture, recognition, comparison, and feedback delivery process occurs continuously and instantly, keeping the learning process active and engaging without delays.

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS11521506B2Calculation practicing method, system, electronic device and computer readable storage medium
Publication Date: 2022.12.06 HANGZHOU DANA TECH INC
  • US11521506B2 patent drawing
  • US11521506B2 patent drawing
  • US11521506B2 patent drawing

AI summary

The disclosure provides a calculation practicing method, a system, an electronic device and a computer readable storage medium, the calculation practicing method includes: providing a calculation question; identifying the type and content of the calculation question; generating an answer area according to the type and content of the calculation question; receiving an answering operation in which the user inputs the answer string for the calculation question in the answer area; identifying the answer string inputted by the user; and determining whether each of the answer characters in the answer string is correct, if there is an incorrect answer character, it will be marked, so that the calculation practice can be realized through the electronic device, which is convenient for students to carry out training.