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检索条件"主题词=Blocks-Based Programming"

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A Testing Extension for Scratch 24

A Testing Extension for Scratch

引用

Annual ACM Southeast Conference (ACMSE)

作者： Nurue, Herart Dominggus Gray, Jeff Univ Alabama Tuscaloosa AL 35487 USA

ISBN: (纸本)9798400702372

Scratch allows programmers to create interactive stories, games, and animations using coding blocks rather than traditional textual programming languages. Scratch provides an intuitive, blocks-based interface that makes it easy for beginners to create programs. As Scratch programs become more complicated, there is a higher potential for programming mistakes to emerge. Scratch programmers often encounter sprite behavior, event sequencing, and data handling issues. A testing extension can serve as a valuable addition to the Scratch environment, assisting users in identifying and resolving such errors. This paper introduces the concept of a software testing extension in Scratch that includes an assert block. This short paper provides a detailed motivation for the need to support testing in Scratch through an example that demonstrates how the proposed testing extension can be used. The Scratch extension can help students identify errors within their program and facilitate a valuable learning process through a test-driven focus.

关键词： Scratch testing blocks-based programming

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Transitioning from blocks to Text 2022

Transitioning from Blocks to Text

引用

53rd Annual ACM SIGCSE Technical Symposium on Computer Science Education (SIGCSE)

作者： Brown, Neil C. C. Kolling, Michael Kyfonidis, Charalampos Weill-Tessier, Pierre Kings Coll London London England

ISBN: (纸本)9781450390705

Block-based programming languages are very popular for introducing young novices to programming. The drag-and-drop interface, with large palettes of blocks, aids initial manipulation and discoverability. When novices continue with programming, they will likely do so by transitioning to a text-based programming language where they are confronted by a blank page and a blinking cursor. The move can be quite a shock. It is important for educators to be able to help with this transition. There are several elements to managing this transition: pedagogical, or tool-based. There exist tools that can show blocks and text, and there also exist tools occupying a middle space between blocks and text. In this session we will give a programming environment designer's view of why this transition is so difficult and explain how we attempted to solve the challenge in our own hybrid programming systems. We will then invite opinions from the audience on how they conquer the transition using tools and/or pedagogical approaches.

关键词： blocks-based programming blocks-Text transition Pedagogy

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Thinking in blocks: Implications of Using Abstract Syntax Trees as the Underlying Program Model

Thinking in Blocks: Implications of Using Abstract Syntax Tr...

引用

IEEE blocks and Beyond Workshop (B&B)

作者： Wendel, Daniel Medlock-Walton, Paul MIT Scheller Teacher Educ Program 77 Massachusetts Ave Cambridge MA 02139 USA

ISBN: (纸本)9781467383677

This paper examines the implications of using Abstract Syntax Trees (ASTs) as the underlying model for program editors and source control. For editors, working at the level of the AST enables error prevention, efficient autocompletion, and seamless use of multiple representations (e.g. blocks-to-text-to-blocks). An AST-based system also lends itself to both real-time and asynchronous collaborative editing, through intention-preserving algorithms much simpler than Operational Transformations. AST-based asynchronous collaborative editing makes several improvements to source control compared to Git, notably: reducing conflicts even in same-position edits, and eliminating diffs (and therefore conflicts) due to changes in formatting, spacing, or method ordering. Even text-based languages can reap these benefits, simply by changing the underlying program representation from text to AST.

关键词： AST blocks-based programming multiple representations real-time collaboration source control

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BJC Sparks: A New Functional-First Middle School CS Curriculum 2023

BJC Sparks: A New Functional-First Middle School CS Curricul...

引用

54th Annual ACM SIGCSE Technical Symposium on Computer Science Education (SIGCSE TS)

作者： Garcia, Dan Fries, Mary Ball, Michael Fox, Pamela Gelosi, Deanna Mock, Lauren Dastur, Della Briccetti, Dave Kahn, Bob Univ Calif Berkeley Berkeley CA 94720 USA Educ Dev Ctr Inc Waltham MA USA CU Boulder Boulder CO USA Stratford San Jose Middle Sch San Jose CA USA Dave Briccetti Software LLC Lafayette CA USA Brentwood Sch Los Angeles CA USA

ISBN: (纸本)9781450394314

We present our experience with the design and implementation of BJC Sparks, a new introductory computer science curriculum for middle school piloted by ten teachers in the 2021-2022 academic year. Our curriculum is functional-first, using abstraction, functional decomposition, immutable data, and powerful higher-order functions such as map, keep, and combine. based on a decade of experience teaching thousands of first-time programmers, we believe starting with functions teaches students the habit of solving problems functionally when possible, helping to avoid bugs in later programming experiences. BJC Sparks uses the Snap! blocks-based programming environment, which brings the expressive power of a general-purpose programming language without requiring mastery of the syntax of a text-based language. We take advantage of new Snap! features to develop microworlds: customized projects that simplify the blocks palette to further lower cognitive load. We designed projects that use Snap!'s multimedia features to explore data science, encryption, and computational media. We end with physical computing using the BBC micro:bit that students program using Microblocks. In terms of findings, we confirmed that it indeed was possible to capture the interest of middle school students with functional programming activities, especially through the use of microworlds. We were surprised at the strong student and teacher interest in our micro:bit lessons, which many wanted as a stand-alone unit. Finally, it became quite clear that multimedia and data science projects offer promising avenues for teaching functional programming through fun, engaging, and personally relevant activities.

关键词： middle school functional programming blocks-based programming Snap media computation data science

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Demo: Expanding blocks4All with Variables and Functions 19

Demo: Expanding Blocks4All with Variables and Functions

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21st ACM SIGACCESS International Conference on Computers and Accessibility (ASSETS)

作者： Ong, Jacqueline Shao Yi Amoah, Nana Adwoa O. Garrett-Engele, Alison E. Page, Mariella Irene McCarthy, Katherine R. Milne, Lauren R. Macalester Coll Dept Math Stat & Comp Sci St Paul MN 55105 USA

ISBN: (纸本)9781450366762

blocks-based programming environments are often inaccessible for children with visual impairments who cannot interact with their visual components. We present our work on expanding blocks4All, a touchscreen-based blocks-based programming environment that is accessible with screen readers, to improve its accessibility and expand its functionality. We describe our designs to support more complex functionality such as modifiable blocks, variables and functions and provide our code to encourage others to make their own environments accessible. We plan to evaluate the updated interface with children with low vision participating in a robotics competition.

关键词： Accessibility blocks-based programming visual impairments motor impairments educational technology touchscreen interactions

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Dronely: A Visual Block programming Language for the Control of Drones 17

Dronely: A Visual Block Programming Language for the Control...

引用

ACM Southeast Regional Conference

作者： Tilley, Eric Gray, Jeff Univ Alabama Tuscaloosa AL 35487 USA

ISBN: (纸本)9781450350242

Dronely is a visual block programming language that allows users to build programs for the control of small drones. Dronely uses drones as a way of raising interest in computer science among K-12 students by presenting a user-friendly and intuitive drag-anddrop interface for building programs that have a physically observable effect. Although the language was designed so that simple tasks are straightforward to accomplish, more complex programs can still be implemented in Dronely. In this paper, we introduce the language features provided in Dronely and outline the implementation details of using Blockly on an Android device.

关键词： blocks-based programming Computer Science Education Autonomous Vehicles

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HAWK/KW: An Online System for Studying Dyslexic Children’s Reading, Writing, and programming

HAWK/KW: An Online System for Studying Dyslexic Children’s ...

引用

作者： Thompson, Robert Haven University of Washington

学位级别：Ph.D.

This thesis describes the design and use of an online system of computerized lessons built to teach reading and writing to students with learning disabilities as part of a large research project on specific learning disabilities in written language. The system comprises two main components: HAWK, the portion that teaches reading and writing skills, and Kokopelli’s World, the addition to HAWK that introduces programming instruction. Kokopelli’s World is a novel blocks-based coding environment designed to cater to the needs of dyslexic students. The thesis also presents two user studies that explore the relationship between programming and dyslexia. Results suggest that different measures of dyslexia may have different correlation with programming success. The thesis also presents detailed coding experiences of two dyslexic students and discusses them in terms of a newly constructed set of recurring programming patterns. These studies have identified a set of hypotheses about how dyslexic students relate to computer programming that can help structure future research on programming by dyslexic children.

关键词： accessibility blocks-based programming coding patterns dyslexia education learning disabilities Computer science Computer science and engineering

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Beauty and Joy of Computing: AP CS Principles & Middle School Curriculum 2022

Beauty and Joy of Computing: AP CS Principles & Middle Schoo...

引用

Proceedings of the 53rd ACM Technical Symposium on Computer Science Education V. 2

作者： Michael Ball Lauren Mock Dan Garcia Tiffany Barnes Marnie Hill Mary Fries Pamela Fox Yuan Garcia University of California Berkeley Berkeley CA USA North Carolina State University Raleigh NC USA Education Development Center Waltham MA USA Mills High School Millbrae CA USA

ISBN: (纸本)9781450390712

The Beauty and Joy of Computing (BJC) is a CS Principles (CSP) course created at UC Berkeley to reach high school and university nonmajors in computer science. It was chosen for the CSP pilot and endorsed by the College Board as an AP CSP curriculum and PD provider since the first AP CSP exam sitting in 2017. This past year, BJC developed a new course for middle school and early high school that teaches a functional approach to programming, emphasizing iteration and commands, and including exciting projects in graphics, data, and media. In this workshop, we will provide an overview of the BJC middle school and high school curriculum including course materials, teacher resources, and an introduction to Snap!, the chosen visual programming language of BJC. We will not only cover curriculum updates, Snap! updates, BJC for middle school, BJC in other languages, but also dive into labs with hands-on programming. Laptop is required.

关键词： blocks-based programming advanced placement middle school non-majors computer science principles broadening participation high school cs0

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Snap! A Look at 5 Years, 250,000 Users and 2 Million Projects 19

Snap! A Look at 5 Years, 250,000 Users and 2 Million Project...

引用

Proceedings of the 50th ACM Technical Symposium on Computer Science Education

作者： Michael Ball Jens Mönig Bernat Romagosa Brian Harvey University of California Berkeley Berkeley CA USA SAP Waldorf Germany Independent Barcelona Spain

ISBN: (纸本)9781450358903

Snap! is blocks-based programming language that inherits a design and vocabulary from Scratch, but has been extended with support for user-defined functions, and robust built-in libraries. The Snap! Cloud software has been running for over 5 years and recently passed 250,000 users and 2 million projects of which nearly 600,000 are shared publicly. We have been to do an exploratory analysis the database of public projects to better understand how students are programming an using Snap!. This analysis is being conducted using a cleaned up XML-based representation of Snap! projects, which allows querying for data using SQL to extract information from project files. So far, we've seen that projects in Snap! computationally more complex than those found in Scratch, and make use of Snap!'s advanced features. Combined with growing use, we hope to give context to the ways which Snap! (and other) blocks-based languages are being used in classrooms. While there has been a discussion of code smells in Scratch, we haven't seen any discussions using Snap! and hope to show its additional functionality helps write clean code. Finally, we are interested in presenting a clear story of growing use for Snap! that is a compelling case to teachers (and subsequently their students) that blocks-based languages can be quite popular.

关键词： blocks-based programming visual programming language cloud software snap! program analysis

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Snap! 8 - Smart Script Pics and Metaprogramming for All! 2023

Snap! 8 - Smart Script Pics and Metaprogramming for All!

引用

Proceedings of the 54th ACM Technical Symposium on Computer Science Education V. 2

作者： Michael Ball Dan Garcia Yuan Garcia UC Berkeley Berkeley CA USA Mills High School Millbrae CA USA

ISBN: (纸本)9781450394338

Snap! version 8 introduces more than 700 documented fixes and enhancements book-ended by two major new features: smart script pics and metaprogramming. "Smart script pics" enable users to easily share images that embed the program inside the image file! All you need to do is simply drag-and-drop and images to share code. This simple feature makes projects far more collaborative by reducing the burden to share *** second, and arguably more powerful feature, is bringing metaprogramming to a blocks-based programming language! The idea of metaprogramming is a powerful one; it allows programmers to write programs that generate other programs, and has many implications for teaching computer science. It allows instructors and students to easily build autograders, libraries, abstract data types, and ***! accomplished this by adding just a few blocks that provided the ability to define new blocks, as well as query and modify existing scripts, bringing the power of reflection to a visual programming language. In this demo we'll explore hands-on ways to use smart script pics and metaprogramming to enhance teaching CS. Overall, the new Snap! 8 release represents more than 12 months of hard work by a dedicated team, and we would be delighted to share these new features with our SIGCSE *** projects and examples from this demonstration will be shared at https://***/snap-sigcse23

关键词： beauty and joy of computing blocks-based programming build your own blocks snap

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