RULER-related research projects fall under two categories: Evaluation and Innovation. We study the empirical foundation for RULER, including testing the effects of RULER at the school, teacher, classroom, and student-level across grades Pre-K-12. Learn more about each project below.

Promoting School Readiness Through Emotional Intelligence

  • Funding Source: Institute of Education Sciences (R305A180293)

  • Team Members: Craig Bailey, Marc Brackett, Olivia Martinez, Irem Korucu, Daphnee Nicolas, Colleen Cassidy, Lauren Costello, Terrance Lane, Tessa McNaboe, Ashlin Ondrusek, Gina Schnur, Meghan Tuttle, Sharon Shapses, Shauna Tominey (Oregon State University), Andy Mashburn (Portland State University), and Jaiya Choles (Portland State University)

  • Project Description: This five-year project (2018-2023) is designed to test whether RULER for Early Childhood has an impact on children’s school readiness, school and classroom climate, and teacher skills and director well-being in 72 preschools across Connecticut.

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A Randomized Control Trial of RULER in Elementary School Classrooms

  • Funding Source: Institute of Education Sciences

  • Team Members: Marc Brackett, Dena Simmons, Chris Cipriano, Sara Rimm-Kaufman, & Jason Downer (University of Virginia)

  • Project Description: The Goal 3 Efficacy Study examines the impact of RULER, a widely-used, whole-school social and emotional learning (SEL) intervention, compared to a business-as-usual counterfactual.

Hartford Early Childhood SEL Initiative

  • Funding Source: Hartford Foundation for Public Giving

  • Team Members: Craig Bailey, Kathryn Lee, Whitney Sanders, Tony Nelson

  • Project Description: This three-year research-to-practice partnership (2018-2023) is tasked with ensuring coordinated, high-quality SEL programming and supports for the early childhood educators, young children, and families in and around Hartford, CT.

About product and suppliers: 41,620 ruler products are offered for sale by suppliers on Alibaba.com, of which rulers accounts for 28%, other measuring & gauging tools accounts for 6%, and levels accounts for 3%. An on screen ruler for a Windows Desktop PC user who needs to keep an eye on a line of data whilst looking at something else and back again. One often sees people pointing at the screen with their finger to keep their eye on a value while doing something else with their mouse pointer, perhaps on another screen. Product Title Westcott See Through Acrylic Ruler, 12', Clear Average Rating: ( 4.6 ) out of 5 stars 102 ratings, based on 102 reviews Current Price $1.48 $ 1. 48 List Price $1.73 $ 1. You could ensure that the ruler on the screen is in actual size by measuring some 'standard' object you have in your pocket like A4 paper, credit card, iPhone, banknote, etc. For example, you have 100 hundred dollar bill. You googling '100 dollar note size', finding that it is 2.61 inches wide and then measuring it with the ruler. 4 synonyms of ruler from the Merriam-Webster Thesaurus, plus 28 related words, definitions, and antonyms. Find another word for ruler. Ruler: one who rules over a people with a sole, supreme, and usually hereditary authority.

Bridgeport Early Childhood SEL Initiative

  • Funding Source: Tauck Family Foundation

  • Team Members: Craig Bailey, Whintey Sanders, Michael Strambler & Joanna Meyer (The Consultation Center at Yale), Sarah Kadden

  • Project Description: This five-year, community-based, research-to-practice partnership (2018-2023) between Yale University and local community stakeholders is tasked with creating a community of practice by infusing SEL into the culture and infrastructure of the community and ensuring coordinated, high quality SEL programming and supports for early childhood educators, young children, and families of Bridgeport, CT.

Pilot and Refinement of RULER in Chinese Preschools

  • Funding Source: Yale China Fund for Emotional Intelligence

  • Team Members: Craig Bailey, Marc Brackett, Meiko Lin, Whitney Sanders, Daphnee Nicolas, Miriam Miller, Sarah Kadden

  • Project Description: The purpose of this pilot project is to lay the groundwork for introducing and infusing RULER into preschools (serving students, ages 3–6) across China as well as studying RULER efficacy and implementation in China.

RULER for High School in Mexico

  • Funding Source: Instituto de Tecnologico de Monterrey

  • Team Members: Jessica Hoffmann, Kari Olsen, Jennifer Seibyl, Raphie Orleck-Jetter, & Ruth Castillo Gualda (Universidad Camilo Jose Cela)

  • Project Description: Research efforts to date have included annual surveys of students and staff to track emotional intelligence skills, perspectives on school climate improvements, growth mindset, academic goals, and educator burnout and engagement.

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Culturally Responsive RULER: A Learning Partnership with the Fugees Academy

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Ruler Actual Size On Screen

  • Funding Source: Chan Zuckerberg Initiative (CZI)

  • Team Members: Chris Cipriano & Luma Mufleh (Fugees Academy)

  • Project Description: The goals of this project are to share knowledge and expertise to (1) promote educator authenticity, retention, and emotional well-being among the Fugees Academy Faculty and Staff and (2) promote cultural responsiveness of RULER tools and educator trainings.

SEL for All: Measuring Up RULER to Promote SEL Access and Outcomes for All Learners

  • Funding Source: Oak Foundation, Chan Zuckerberg Initiative

  • Team Members: Chris Cipriano, Marc Brackett, Gabbie Schlichtmann (Ed Together), Mike McCarthy, & Lauren Naples

  • Project Description: This is a collaborative initiative to create a more equitable education system through social and emotional learning (SEL) by catalyzing and supporting sustained change toward the meaningful inclusion of all students.

If you want to measure the actual size of a small object in inches or centimeters and you don’t have a real ruler at hand, this virtual on-screen online ruler will help you. You can make the necessary measurements on any device that allows you to browse the web. This online app works on both computers with a large screen (laptops, PCs, monoblocks or smart TVs) and mobile gadgets (phones, phablets, tablets, e-ink readers). The maximum length of the ruler (fully visible when displayed on a sufficient screen) is 20 inches, or 50 centimeters (500 millimeters) for the metric scale option.

💁 How to use this online ruler

For the ruler to display correctly (i.e., in proportion to the actual physical size), it must be calibrated. You can calibrate it in one of the following two ways:

  1. 📱 💻 📺 Set screen diagonal

    This is the most reliable and easy way. Specify the size of the diagonal of your screen in inches ('). Enter this value in the input field located in the lower left corner of the ruler image. Then click the or press the button on the keyboard. You can also select the size from the drop-down list (which opens when you click the button , which is adjacent to the numeric input field). This presents many of the most common options among users.

    The diagonal of the current device's display, automatically detected by the browser, is . In most practical cases, this calculated value does not correspond to the real extent and is instead proposed for consideration as an approximate one for consideration purposes. This circumstance is caused by the existing constraint imposed by the specifics of the interaction of modern web browsers (none of which has the functionality of providing web applications with access to information about the display’s physical parameters) with operating systems. Depending on the type and class of device, the probable error varies in a range of up to several centimeters, or 1 inch. Accordingly, to the best possible, the reliability of the indications of the uncalibrated online ruler will differ from the standard. Nevertheless, the deviation may be minimal. In this case, the initially visualized ruler will be suitable for measurements that do not require high accuracy (especially when measuring small objects).

    If you do not know the exact value of your screen’s diagonal, you can find it in the technical documentation attached to the device, or simply search the Internet for the model name.
    If for some reason this information is difficult to obtain and you have a standard plastic card with you, you can use the second method. ↓

  2. 💳 Fit to the width of a plastic card

    You can also calibrate the on-screen ruler using a bank payment card. Its standard width is 3.37 inches (3 3⁄8 inches), or 85.6 mm (8 centimeters, 56 millimeters) for the metric measurement. For your convenience, the corresponding sign is plotted under the scale of the ruler. Change the diagonal value in the input field until the edge of the plastic card attached (oriented horizontally) to the screen coincides with the black stroke to the left of the icon.

    Using this method in addition to the first method will allow you to determine the size of the display diagonal. To avoid the known inconvenience associated with selecting a number by successive manual input, bring it to the desired value using the vertical scroll arrows that appear on the right side of the input field when you hover the cursor over it (when using the virtual ruler on a PC).

📏🔧 How the ruler’s actual size is achieved

Based on the browser-defined screen height and width, the script:Online ruler

Ruler Game

  1. calculates the diagonal in pixels (it does not matter if the number of virtual pixels on which the browser operates is the actual physical resolution of the display);
  2. calculates the PPI (pixels per inch) of the screen: the resulting diagonally expressed diagonal is divided by the user's diagonal value in inches;
  3. determines the length of the ruler in pixels, the corresponding real 50 centimeters: the PPI value is multiplied by expressed in inches 50 centimeters. For inch scale, it is simply multiplied by 20.

⚠️ ️Note

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Ruler Measurement Chart

Keep in mind that the above instructions for setting up the ruler are valid only when the following conditions apply:

Ruler Foods

  • Standard page scale adjustment in your browser (this is true for desktop browsers). When the scale is zoomed in/out, the ruler scale will shrink/stretch (along with other elements on the page that are subject to transformation during scaling). This will lead to a significant distortion of the online ruler readings. If you often, for example, change the font sizes on sites, be sure to set the scale to 100%;
  • JavaScript is enabled;
  • The ability to download images is enabled.