Subtraction Duel 3D Game for Kids

Use the simulation controls to pause, reset, zoom, and explore.

About this simulation

What you can explore

Use the controls in the interactive lesson to change conditions, observe the model, and connect the visual response to the underlying concept.

Learning tip

Change one thing at a time.

Make a prediction, adjust a single control, and compare what happened with what you expected.

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Creator widget

Embed this simulation

Choose standard HTML, the reliable WordPress shortcode, or advanced page-builder fields. Every format retains EduInput branding and the referral backlink.

Complete widget code

<div class="eduinput-simulation-widget" style="width:100%;max-width:1100px;margin:1.5rem auto;">
  <iframe src="https://simulations.eduinput.com/widget/subtraction-duel-3d-game-for-kids" title="Subtraction Duel 3D Game for Kids — EduInput sims" width="1100" height="680" loading="lazy" sandbox="allow-scripts allow-popups allow-popups-to-escape-sandbox" allow="fullscreen" allowfullscreen referrerpolicy="strict-origin-when-cross-origin" style="display:block;width:100%;height:680px;border:0;border-radius:14px;background:#0f172a;"></iframe>
  <p style="margin:.55rem 0 0;text-align:center;font:500 13px/1.4 Arial,sans-serif;color:#5f6675;">Interactive simulation by <a href="https://simulations.eduinput.com/simulation/subtraction-duel-3d-game-for-kids?utm_source=embedded_widget&amp;utm_medium=referral&amp;utm_campaign=creator_embed" target="_blank" rel="noopener" style="color:#f4722d;font-weight:700;">EduInput sims</a></p>
</div>

For a normal HTML editor. WordPress users should use the tested shortcode method in the next tab.

Open widget preview

Tested with WordPress 7.0

Reliable shortcode — recommended

Install the small EduInput plugin once. Then paste this shortcode into a WordPress Shortcode block or your builder’s Shortcode element. WordPress cannot strip the iframe, and no custom JavaScript is needed.

Download, then open Plugins → Add Plugin → Upload Plugin.
Upload and activate the ZIP file.
Add a Shortcode block and paste the code below.

Download WordPress plugin

WordPress shortcode

[eduinput_simulation slug="subtraction-duel-3d-game-for-kids"]

This is the only code needed after the plugin is active.

Advanced: page builder without the plugin

For Elementor, Divi, Bricks, and similar builders: paste each block into its matching HTML, CSS, or JavaScript field. The HTML now contains its own layout fallback, so it remains visible even if the optional fields are unavailable.

1. HTML required

<div class="eduinput-wp-widget" data-eduinput-simulation-widget style="width:100%;max-width:1100px;margin:1.5rem auto;">
  <iframe class="eduinput-wp-widget__frame" src="https://simulations.eduinput.com/widget/subtraction-duel-3d-game-for-kids" title="Subtraction Duel 3D Game for Kids — EduInput sims" width="1100" height="680" loading="lazy" sandbox="allow-scripts allow-popups allow-popups-to-escape-sandbox" allow="fullscreen" allowfullscreen referrerpolicy="strict-origin-when-cross-origin" style="display:block;width:100%;height:680px;border:0;border-radius:14px;background:#0f172a;"></iframe>
  <p class="eduinput-wp-widget__credit" style="margin:.55rem 0 0;text-align:center;font:500 13px/1.4 Arial,sans-serif;color:#5f6675;">Interactive simulation by <a href="https://simulations.eduinput.com/simulation/subtraction-duel-3d-game-for-kids?utm_source=embedded_widget&amp;utm_medium=referral&amp;utm_campaign=creator_embed" target="_blank" rel="noopener" style="color:#f4722d;font-weight:700;text-decoration:underline;">EduInput sims</a></p>
</div>

Paste into the builder’s HTML element. It already includes working dimensions.

2. CSS optional

.eduinput-wp-widget {
  width: 100%;
  max-width: 1100px;
  margin: 1.5rem auto;
}

.eduinput-wp-widget__frame {
  display: block;
  width: 100%;
  height: 680px;
  border: 0;
  border-radius: 14px;
  background: #0f172a;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.14);
}

.eduinput-wp-widget__credit {
  margin: 0.55rem 0 0;
  color: #5f6675;
  font: 500 13px/1.4 Arial, sans-serif;
  text-align: center;
}

.eduinput-wp-widget__credit a {
  color: #f4722d;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}

@media (max-width: 900px) {
  .eduinput-wp-widget__frame { height: 700px; }
}

@media (max-width: 640px) {
  .eduinput-wp-widget__frame { height: 720px; border-radius: 10px; }
}

Paste without <style> tags into the builder’s CSS field or Additional CSS.

3. JavaScript optional

(function () {
  "use strict";

  function initEduInputWidgets() {
    var widgets = document.querySelectorAll("[data-eduinput-simulation-widget]");
    widgets.forEach(function (widget) {
      if (widget.dataset.eduinputWidgetReady === "true") return;
      widget.dataset.eduinputWidgetReady = "true";
      var frame = widget.querySelector(".eduinput-wp-widget__frame");
      if (!frame) return;

      var resize = function () {
        var width = widget.getBoundingClientRect().width;
        frame.style.height = (width <= 640 ? 720 : width <= 900 ? 700 : 680) + "px";
      };
      resize();

      if ("ResizeObserver" in window) {
        var observer = new ResizeObserver(resize);
        observer.observe(widget);
      } else {
        window.addEventListener("resize", resize, { passive: true });
      }
    });
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", initEduInputWidgets, { once: true });
  } else {
    initEduInputWidgets();
  }
}());

Paste without <script> tags only if the builder provides a JavaScript/footer-code field.

If WordPress removes the iframe, use the shortcode plugin above. Restricted author roles cannot save raw iframes by design.

Preview

The copied version adds the referral backlink directly beneath this frame.

What you can explore

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