Partial Sums Addition vs Bar Chart Race

Partial Sums Addition helps students learn and practice the partial sums addition method step by step. The app gives students a visual way to add numbers by working with each place value separately. The partial sums are then combined to find the final answer. Students can solve randomly generated problems or enter their own addition problems. The number of digits can be adjusted for different skill levels. The Partial Sums Method: In the partial sums method, each place value is added separately from left to right. For example, in 764 + 340, the partial sums are 1000, 100, and 4. These are then added together to get the final answer: 1104. Wired.com: “Esa Helttula’s apps are all fantastic for math learning and practice, and aren’t cluttered with mini-games, incentives, or annoying music.” Teacher endorsement: “The math apps by Esa Helttula allow students to practice and reinforce the specific computation strategies taught in class, with as much or as little scaffolding as necessary. They also provide individualized feedback to each student, with an immediacy that is not always possible through pencil and paper practice.” — R. Zeni, Ecole Sandy Hill Elementary, Abbotsford, BC, Canada Easy to Use: The numbers are aligned automatically so students can focus on solving each column. After the student solves the operation for each column, the correct answer moves into the right place. If the student presses the wrong button, the answer appears above the keyboard but does not move. Features: - Step-by-step partial sums addition practice - Add 2 or 3 numbers - Each number can have 2–3 digits - Randomly generated or manually entered problems - Current operation for each column can be hidden - Operands of the current operation can be highlighted - Customizable interface colors - Adjustable animation speed - Custom interfaces for iPhone and iPad Other iDevBooks Math Apps: Other iDevBooks math apps include Column Addition, Long Multiplication, Long Division, Column Subtraction, Visual Multiplication Table, Partial Differences Subtraction, Partial Products Multiplication, Partial Quotients Division, Decimal Rounding, and more. Feedback: New ideas to make this app better are welcome. Please visit idevbooks.com to give feedback. Privacy: This app has no ads, no in-app purchases, and does not transmit user data during operation. The app also does not contain links to other apps or to the web.

Bar Chart Race is a creator studio for animated ranking videos. Import a spreadsheet, pick a look, and export a native MP4 ready for Reels, TikTok, Shorts, and YouTube — in 9:16, 1:1, or 16:9. You never need to screen-record the phone. Start from a file, a paste, a URL, or the built-in Open Numbers library (World Bank, Gapminder, Our World in Data and more). Watch bars, lines, or donut shares race through time, then export a real video with optional music and a cover frame. On supported devices, Apple Intelligence writes titles, captions, and shareable insights entirely on-device. Your data does not leave the phone. There is no analytics SDK and no tracking. KEY FEATURES • Native video export — 9:16 Reels, 1:1, and 16:9, up to 1080p (4K with Pro) • No watermark and nothing to subscribe to — buying the app is enough • One-tap races from the Open Numbers dataset library • Six visual themes, flags and logos on bars, intro and outro cards • Bar, line, and donut race layouts • Music loops and overtake sound effects (baked into the file with Pro) • Loopable GIF export (Pro) • CSV, TSV, XLSX, HTML/Wikipedia tables, clipboard, and URLs • On-device titles, insights, and import help • iPad three-column layout and Shortcuts (“Export Chart Race”, “Surprise Me”) • Home Screen widget for your last race — tap to jump back into the player • Open CSV/XLSX from Files or the Share Sheet HOW IT WORKS 1. Create a project — or tap Explore and pick a public dataset. 2. Tweak titles, theme, speed, and the visible bars. 3. Play the race, then Export. Choose 9:16 for Reels. 4. Share the MP4, save to Photos, or copy an AI caption. INCLUDED WITH THE APP Projects, import, editing, playback, the dataset library, on-device AI, all six themes, all three chart types, and unwatermarked MP4 export up to 1080p. BAR CHART RACE PRO (optional — yearly or lifetime) 4K export, loopable GIF export, music and sound baked into the exported file, and your own @handle in place of the app credit. Perfect for educators, journalists, analysts, and social creators who want studio-quality races without a desktop tool. BAR CHART RACE PRO SUBSCRIPTION • Bar Chart Race Pro (Yearly) — US$4.99 per year, starting with a 1-week free trial • A one-time Bar Chart Race Pro Lifetime unlock is also available for US$14.99 • Payment is charged to your Apple Account at confirmation of purchase • The subscription renews automatically unless it is turned off at least 24 hours before the end of the current period, and your Apple Account is charged for renewal within 24 hours of the end of the current period • Manage or cancel it in Settings → your Apple Account → Subscriptions after purchase • Any unused part of a free trial is forfeited if you buy a subscription Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://frasco.co.za/privacy/