diff --git a/static/slides/R/components.R b/static/slides/R/components.R
index 372ecf1..8b21eb4 100644
--- a/static/slides/R/components.R
+++ b/static/slides/R/components.R
@@ -302,3 +302,37 @@ live_coding <- function(
   )
   knitr::asis_output(x)
 }
+
+#' Create Slide Source Panels
+#'
+#' Make sure that the slide to be included has a `name: ` property,
+#' that's how the slide will be found. It also can't be a slide created with a
+#' layout.
+slide_source_panels <- function(slide_name, slide_panel = "Slide", source_panel = "Source") {
+  htmltools::tagList(
+    htmltools::withTags(
+      div(
+        class = "panel",
+        span(class = "panel-name", slide_panel),
+        div(`data-slide-name` = slide_name, `data-type` = "slide")
+      )
+    ),
+    if (!is.null(source_panel)) {
+      htmltools::withTags(
+        div(
+          class = "panel",
+          span(class = "panel-name", source_panel),
+          div(`data-slide-name` = slide_name, `data-type` = "source")
+        )
+      )
+    },
+    htmltools::htmlDependency(
+      name = "slide-source-panels",
+      version = "0.0.1",
+      src = here::here("static", "slides", "assets", "slide-source-panels"),
+      script = "slide-source-panels.js",
+      stylesheet = "slide-source-panels.css",
+      all_files = FALSE
+    )
+  )
+}
diff --git a/static/slides/assets/slide-source-panels/slide-source-panels.css b/static/slides/assets/slide-source-panels/slide-source-panels.css
new file mode 100644
index 0000000..af36af0
--- /dev/null
+++ b/static/slides/assets/slide-source-panels/slide-source-panels.css
@@ -0,0 +1,10 @@
+[data-slide-name] .remark-slide-content {
+  --scale: 0.8;
+	position: absolute;
+	width: 1210px;
+	height: 681px;
+	transform: scale(var(--scale));
+	transform-origin: top left;
+	border: 2px solid #ddd;
+	top: calc((681px - (681px * var(--scale))) / 2);
+}
diff --git a/static/slides/assets/slide-source-panels/slide-source-panels.js b/static/slides/assets/slide-source-panels/slide-source-panels.js
new file mode 100644
index 0000000..2c4b85d
--- /dev/null
+++ b/static/slides/assets/slide-source-panels/slide-source-panels.js
@@ -0,0 +1,83 @@
+(function () {
+  const ready = function (fn) {
+  /* MIT License Copyright (c) 2016 Nuclei */
+  /* https://github.com/nuclei/readyjs */
+    const completed = () => {
+      document.removeEventListener('DOMContentLoaded', completed)
+      window.removeEventListener('load', completed)
+      fn()
+    }
+    if (document.readyState !== 'loading') {
+      setTimeout(fn)
+    } else {
+      document.addEventListener('DOMContentLoaded', completed)
+      window.addEventListener('load', completed)
+    }
+  }
+
+  ready(function () {
+    const placeholders = document.querySelectorAll('.remark-slides-area [data-slide-name]')
+
+    if (!placeholders.length) {
+      return;
+    }
+
+    function getSlideSource (name, keepName) {
+      let src = '---\n'
+      src += document
+        .getElementById('source')
+        .textContent.split(/(^|\n)---\n/)
+        .filter(s => s.match(RegExp(`name: ?${name}`)))
+        .join()
+
+      if (!keepName) {
+        src = src.replace(/\nname: ?[^\n]+/, '')
+      }
+
+      return src
+    }
+
+    function appendSlideSource (el) {
+      console.log(el.dataset)
+      const theCode = getSlideSource(el.dataset.slideName, el.dataset.keepName)
+      const pre = document.createElement('pre')
+      const code = document.createElement('code')
+      code.classList = 'markdown remark-code'
+      theCode.split('\n').forEach(function(line) {
+        const div = document.createElement('div')
+        div.classList = 'remark-code-line'
+        div.innerText = line
+        code.appendChild(div)
+      })
+      // code.innerText = theCode
+      pre.appendChild(code)
+
+      el.appendChild(pre)
+      return el
+    }
+
+    function getSlideNodeClone (name) {
+      const slide = document.getElementById('slide-' + name)
+      const newSlide = slide.cloneNode(true)
+      newSlide.removeAttribute('id')
+      return newSlide
+    }
+
+    function appendSlideNode (el) {
+      const slide = getSlideNodeClone(el.dataset.slideName)
+      el.appendChild(slide)
+      return el
+    }
+
+    placeholders.forEach(function (el) {
+      switch (el.dataset.type) {
+        case 'source':
+          appendSlideSource(el)
+          break
+        case 'slide':
+        default:
+          appendSlideNode(el)
+      }
+    })
+  })
+})()
diff --git a/static/slides/demo-slide-source-panels.Rmd b/static/slides/demo-slide-source-panels.Rmd
new file mode 100644
index 0000000..d650e39
--- /dev/null
+++ b/static/slides/demo-slide-source-panels.Rmd
@@ -0,0 +1,188 @@
+---
+scene: 0
+title: "Demo Slides"
+subtitle: "A work in progress!"
+author: "Garrick Aden-Buie & Silvia Canelón"
+date: '2021-07-07'
+output:
+  xaringan::moon_reader:
+    lib_dir: "assets/libs"
+    css:
+      - assets/css/js4shiny-xaringan-base.css
+      - assets/css/tachyons.min.css
+      - assets/css/js4shiny-xaringan-extra.css
+    includes:
+      after_body: assets/html/js4shiny-includes.html
+    seal: false
+    chakra: assets/js/remark.0.14.1.min.js
+    mathjax: NULL
+    nature:
+      ratio: 16:9
+      slideNumberFormat: "%current%"
+      highlightStyle: docco
+      highlightLines: true
+      countIncrementalSlides: true
+---
+
+class: title
+
+```{r setup, include=FALSE}
+options(htmltools.dir.version = FALSE)
+knitr::opts_chunk$set(
+  fig.width = 10,
+  fig.height = 6,
+  fig.retina = 2,
+  warning = FALSE,
+  message = FALSE
+)
+source(here::here("static", "slides", "R", "components.R"))
+# use_placeholders(TRUE, TRUE)
+xaringanExtra::use_xaringan_extra(c("tile_view", "panelset", "share_again"))
+xaringanExtra::use_editable(id = rmarkdown::metadata$title)
+```
+
+```{r js4shiny, echo=FALSE}
+js4shiny::html_setup(stylize = c("fonts", "variables", "code"))
+```
+
+`r title_slide()`
+
+---
+name: first-demo
+class: fullscreen
+
+.panelset.sideways.pl2.h-100[
+
+```{r echo=FALSE}
+# this function was added to components.R
+# it creates two panels, one with a copy of the slide (found by name)
+# and another panel with the markdown source for the slide (as seen by remark)
+# (If the slide source is complicated, you can set source_panel = NULL and 
+# manually add the source code in a panel.)
+slide_source_panels("fonts")
+```
+
+]
+
+---
+class: fullscreen
+
+.panelset.sideways.pl2.h-100[
+
+```{r echo=FALSE}
+slide_source_panels("html-resources")
+```
+
+.panel[.panel-name[Notes]
+
+## Good?
+
+## Bad?
+
+## What do you think?
+
+The slides are actually in the deck in a later section.
+I put them at the end in an "Appendix".
+
+The source is pulled from the compiled source, so you can't see R Markdown bits.
+
+]
+
+]
+
+---
+class: fullscreen
+
+.panelset.sideways.pl2.h-100[
+
+```{r echo=FALSE}
+slide_source_panels("break-javascript")
+```
+
+.panel[.panel-name[Notes]
+
+This slide doesn't look _perfect_ so somethings that rely on absolute positioning may be a little bit weird. Most basic xaringan stuff will probably look okay, though.
+
+]
+
+]
+
+---
+class: fullscreen
+
+.panelset.sideways.pl2.h-100[
+
+```{r echo=FALSE}
+slide_source_panels("first-demo", source_panel = NULL)
+```
+
+.panel[.panel-name[Source]
+
+This is where it gets **meta**.
+We're looking at a slide we saw earlier in the deck!
+
+This is the code I used to create that slide.
+
+````markdown
+---
+name: first-demo
+class: fullscreen
+
+.panelset.sideways.pl2.h-100[
+
+```{r echo=FALSE}`r ''`
+slide_source_panels("fonts")
+```
+
+]
+````
+
+I had to manually make this **Source** panel because it includes an Rmd chunk.
+
+]
+
+]
+---
+class: center middle
+
+# Appendix
+
+---
+class: break break-javascript
+name: break-javascript
+
+# JavaScript inspired break
+
+.absolute.top-1.left-1[break break-javascript]
+
+---
+name: fonts
+
+# Fonts
+
+.mh-auto.w-80.f5.mt4[
+.f-lato[Lato (body)] .fr.code[.f-lato]
+
+.f-nunito[Nunito Sans] .fr.code[.f-nunito]
+
+.f-marker[Marker] .fr.code[.f-marker]
+
+.f-source-code[Source Code Pro] .fr.code[.f-source-code]
+]
+
+---
+name: html-resources
+
+# HTML Resources
+
+* Mastering Shiny: Advanced UI<br>
+  https://mastering-shiny.org/advanced-ui.html
+
+* FrontEnd Masters Handbook<br>
+  https://frontendmasters.com/books/front-end-handbook/2019/
+
+* Interneting is Hard<br>
+  https://internetingishard.com/
+
+* HTML Semantics Cheat Sheet<br>
+  https://learn-the-web.algonquindesign.ca/topics/html-semantics-cheat-sheet/