Abstract: A computerized system enables teachers and students to collaborate in the solutions of STEM problems. The system includes a communications network linking a teacher computer, one or more student computers, and at least one computer-readable storage medium. Each of the computers includes an input device for receiving input via the input device and a screen for displaying the input. The computers are operatively linked and each of their screens forms a virtual shared whiteboard defining a common work page upon which input from each computer is received and displayed. Input received from each computer interacts mathematically with input received from each other computer in the network and the interactions are displayed on each screen. The input and interactions form a collaborative solution to STEM problems. When prompted, the storage medium records and plays back the solutions to the STEM problems on each screen for subsequent assessment of student performance.

Abstract: A computerized system enables teachers and students to collaborate in the solutions of STEM problems. The system includes a communications network linking a teacher computer, one or more student computers, and at least one computer-readable storage medium. Each of the computers includes an input device for receiving input via the input device and a screen for displaying the input. The computers are operatively linked and each of their screens forms a virtual shared whiteboard defining a common work page upon which input from each computer is received and displayed. Input received from each computer interacts mathematically with input received from each other computer in the network and the interactions are displayed on each screen. The input and interactions form a collaborative solution to STEM problems. When prompted, the storage medium records and plays back the solutions to the STEM problems on each screen for subsequent assessment of student performance.

Abstract: A computerized system enables teachers and students to collaborate in the solutions of STEM problems. The system includes a communications network linking a plurality of computers, at least one teacher computer operable by a respective teacher, at least one student computer operable by a respective student, and at least one computer-readable storage medium. Each of the computers includes an input device and a touch sensitive screen for receiving handwritten input via the input device. The computers are operatively linked and each of their touch sensitive screens forms a virtual shared whiteboard defining a common work page upon which input from each computer is received and displayed. Input received from each computer interacts mathematically with input received from each other computer in the network and the interactions are displayed on each screen. The input and interactions form a collaborative solution to a STEM problem.

Abstract: An online system provides for the teaching and learning of step by step solutions to STEM problems. The system comprises at least one tablet computer linked to at least one computer readable storage medium by a communication network. The computer includes an input device and a touch sensitive screen for receiving and displaying handwritten input. A system user inputs the computer with the steps of a step by step solution to a STEM problem by handwriting math expressions and sketches on the touch sensitive screen. The system evaluates and automatically color codes each step in accordance with a color coding protocol stored in the computer readable storage medium as each step is entered into the system. The color coding provides visual feedback which identifies correct steps, erroneous steps, and intermediate steps in the solution. Teachers use the feedback when teaching STEM solutions and students use the feedback when they are practicing and assessing their own solutions.

Abstract: An on-line teaching, learning and assessing system provides a teacher rapid feedback while teaching a classroom lesson on STEM principles by measuring student progress in learning the principles wherein student progress is measured by students' correct answers to assessment questions. The system includes at least one teacher computer and a plurality of student computers linked to the at least one teacher computer by a communications network. Each computer includes an input device and a touch sensitive screen for receiving handwritten input. The teacher inputs the teacher computer with at least one assessment question and at least one corresponding correct answer to the question, both inputs being handwritten using math expressions and STEM sketches. The student inputs the student computer with at least one student answer corresponding to the assessment question, the answer being handwritten using math expressions and STEM sketches.

Abstract: A computerized system enables teachers and students to collaborate in the solutions of STEM problems. The system includes a communications network linking a plurality of computers, at least one teacher computer operable by a respective teacher, at least one student computer operable by a respective student, and at least one computer-readable storage medium. Each of the computers includes an input device and a touch sensitive screen for receiving handwritten input via the input device. The computers are operatively linked and each of their touch sensitive screens forms a virtual shared whiteboard defining a common work page upon which input from each computer is received and displayed. Input received from each computer interacts mathematically with input received from each other computer in the network and the interactions are displayed on each screen. The input and interactions form a collaborative solution to a STEM problem.

Abstract: An on-line teaching, learning and assessing system provides a teacher rapid feedback while teaching a classroom lesson on STEM principles by measuring student progress in learning the principles wherein student progress is measured by students' correct answers to assessment questions. The system includes at least one teacher computer and a plurality of student computers linked to the at least one teacher computer by a communications network. Each computer includes an input device and a touch sensitive screen for receiving handwritten input. The teacher inputs the teacher computer with at least one assessment question and at least one corresponding correct answer to the question, both inputs being handwritten using math expressions and STEM sketches. The student inputs the student computer with at least one student answer corresponding to the assessment question, the answer being handwritten using math expressions and STEM sketches.

Abstract: An on-line teaching, learning and assessing system provides a teacher rapid feedback while teaching a classroom lesson on STEM principles by measuring student progress in learning the principles wherein student progress is measured by students' correct answers to assessment questions. The system includes at least one teacher computer and a plurality of student computers linked to the at least one teacher computer by a communications network. Each computer includes an input device and a touch sensitive screen for receiving handwritten input. The teacher inputs the teacher computer with at least one assessment question and at least one corresponding correct answer to the question, both inputs being handwritten using math expressions and STEM sketches. The student inputs the student computer with at least one student answer corresponding to the assessment question, the answer being handwritten using math expressions and STEM sketches.

Abstract: An online system provides for the teaching and learning of step by step solutions to STEM problems. The system comprises at least one tablet computer linked to at least one computer readable storage medium by a communication network. The computer includes an input device and a touch sensitive screen for receiving and displaying handwritten input. A system user inputs the computer with the steps of a step by step solution to a STEM problem by handwriting math expressions and sketches on the touch sensitive screen. The system evaluates and automatically color codes each step in accordance with a color coding protocol stored in the computer readable storage medium as each step is entered into the system. The color coding provides visual feedback which identifies correct steps, erroneous steps, and intermediate steps in the solution. Teachers use the feedback when teaching STEM solutions and students use the feedback when they are practicing and assessing their own solutions.

Abstract: An on-line teaching, learning and assessing system provides a teacher rapid feedback while teaching a classroom lesson on STEM principles by measuring student progress in learning the principles wherein student progress is measured by students' correct answers to assessment questions. The system includes at least one teacher computer and a plurality of student computers linked to the at least one teacher computer by a communications network. Each computer includes an input device and a touch sensitive screen for receiving handwritten input. The teacher inputs the teacher computer with at least one assessment question and at least one corresponding correct answer to the question, both inputs being handwritten using math expressions and STEM sketches. The student inputs the student computer with at least one student answer corresponding to the assessment question, the answer being handwritten using math expressions and STEM sketches.

Abstract: An improved tennis racket string tension tester of enhanced accuracy and convenient adaptability to rackets of varying configuration and string spacing. To provide for strings of varying diameter and grid spacing, a series of interchangeable washers are provided which exactly fit a centrally disposed interstice and a string grid defined by two horizontal and two transversely extending strings. Deflection of a known type strain gauge is indicated by a liquid crystal readout.

Abstract: A device for testing string tension in the stringing of a tennis racket of simplified construction as compared to prior art devices. The device comprises only five component parts, and occupies a minimum amount of storage space when not in use. Provision is made in several embodiments for including in measurement that component of tension which is caused by slight flexing of the tennis racket frame, and components of frictional force caused by engagement of the device with the tennis racket are completeley eliminated.