asterisk plus question minus glass music search envelope-o heart star star-o user film th-large th th-list check close search-plus search-minus power-off signal cog trash-o home file-o clock-o road download arrow-circle-o-down arrow-circle-o-up inbox play-circle-o repeat refresh list-alt lock flag headphones volume-off volume-down volume-up qrcode barcode tag tags book bookmark print camera font bold italic text-height text-width align-left align-center align-right align-justify list dedent indent video-camera image pencil map-marker adjust tint edit share-square-o check-square-o arrows step-backward fast-backward backward play pause stop forward fast-forward step-forward eject chevron-left chevron-right plus-circle minus-circle times-circle check-circle question-circle info-circle crosshairs times-circle-o check-circle-o ban arrow-left arrow-right arrow-up arrow-down mail-forward expand compress exclamation-circle gift leaf fire eye eye-slash exclamation-triangle plane calendar random comment magnet chevron-up chevron-down retweet shopping-cart folder folder-open arrows-v arrows-h bar-chart twitter-square facebook-square camera-retro key cogs comments thumbs-o-up thumbs-o-down star-half heart-o sign-out linkedin-square thumb-tack external-link sign-in trophy github-square upload lemon-o phone square-o bookmark-o phone-square twitter facebook github unlock credit-card feed hdd-o bullhorn bell-o certificate hand-o-right hand-o-left hand-o-up hand-o-down arrow-circle-left arrow-circle-right arrow-circle-up arrow-circle-down globe wrench tasks filter briefcase arrows-alt group chain cloud flask cut copy paperclip floppy-o square bars list-ul list-ol strikethrough underline table magic truck pinterest pinterest-square google-plus-square google-plus money caret-down caret-up caret-left caret-right columns sort sort-desc sort-asc envelope linkedin rotate-left gavel dashboard comment-o comments-o bolt sitemap umbrella clipboard lightbulb-o exchange cloud-download cloud-upload user-md stethoscope suitcase bell coffee cutlery file-text-o building-o hospital-o ambulance medkit fighter-jet beer h-square plus-square angle-double-left angle-double-right angle-double-up angle-double-down angle-left angle-right angle-up angle-down desktop laptop tablet mobile circle-o quote-left quote-right spinner circle mail-reply github-alt folder-o folder-open-o smile-o frown-o meh-o gamepad keyboard-o flag-o flag-checkered terminal code mail-reply-all star-half-empty location-arrow crop code-fork chain-broken info exclamation superscript subscript eraser puzzle-piece microphone microphone-slash shield calendar-o fire-extinguisher rocket maxcdn chevron-circle-left chevron-circle-right chevron-circle-up chevron-circle-down html5 css3 anchor unlock-alt bullseye ellipsis-h ellipsis-v rss-square play-circle ticket minus-square minus-square-o level-up level-down check-square pencil-square external-link-square share-square compass caret-square-o-down caret-square-o-up caret-square-o-right eur gbp dollar inr cny rouble krw bitcoin file file-text sort-alpha-asc sort-alpha-desc sort-amount-asc sort-amount-desc sort-numeric-asc sort-numeric-desc thumbs-up thumbs-down youtube-square youtube xing xing-square youtube-play dropbox stack-overflow instagram flickr adn bitbucket bitbucket-square tumblr tumblr-square long-arrow-down long-arrow-up long-arrow-left long-arrow-right apple windows android linux dribbble skype foursquare trello female male gittip sun-o moon-o archive bug vk weibo renren pagelines stack-exchange arrow-circle-o-right arrow-circle-o-left caret-square-o-left dot-circle-o wheelchair vimeo-square try plus-square-o space-shuttle slack envelope-square wordpress openid bank graduation-cap yahoo google reddit reddit-square stumbleupon-circle stumbleupon delicious digg pied-piper-pp pied-piper-alt drupal joomla language fax building child paw spoon cube cubes behance behance-square steam steam-square recycle automobile cab tree spotify deviantart soundcloud database file-pdf-o file-word-o file-excel-o file-powerpoint-o file-image-o file-archive-o file-audio-o file-movie-o file-code-o vine codepen jsfiddle life-bouy circle-o-notch ra empire git-square git hacker-news tencent-weibo qq wechat paper-plane paper-plane-o history circle-thin header paragraph sliders share-alt share-alt-square bomb futbol-o tty binoculars plug slideshare twitch yelp newspaper-o wifi calculator paypal google-wallet cc-visa cc-mastercard cc-discover cc-amex cc-paypal cc-stripe bell-slash bell-slash-o trash copyright at eyedropper paint-brush birthday-cake area-chart pie-chart line-chart lastfm lastfm-square toggle-off toggle-on bicycle bus ioxhost angellist cc ils meanpath buysellads connectdevelop dashcube forumbee leanpub sellsy shirtsinbulk simplybuilt skyatlas cart-plus cart-arrow-down diamond ship user-secret motorcycle street-view heartbeat venus mars mercury intersex transgender-alt venus-double mars-double venus-mars mars-stroke mars-stroke-v mars-stroke-h neuter genderless facebook-official pinterest-p whatsapp server user-plus user-times bed viacoin train subway medium y-combinator optin-monster opencart expeditedssl battery battery-3 battery-2 battery-1 battery-0 mouse-pointer i-cursor object-group object-ungroup sticky-note sticky-note-o cc-jcb cc-diners-club clone balance-scale hourglass-o hourglass-1 hourglass-2 hourglass-3 hourglass hand-grab-o hand-paper-o hand-scissors-o hand-lizard-o hand-spock-o hand-pointer-o hand-peace-o trademark registered creative-commons gg gg-circle tripadvisor odnoklassniki odnoklassniki-square get-pocket wikipedia-w safari chrome firefox opera internet-explorer television contao 500px amazon calendar-plus-o calendar-minus-o calendar-times-o calendar-check-o industry map-pin map-signs map-o map commenting commenting-o houzz vimeo black-tie fonticons reddit-alien edge credit-card-alt codiepie modx fort-awesome usb product-hunt mixcloud scribd pause-circle pause-circle-o stop-circle stop-circle-o shopping-bag shopping-basket hashtag bluetooth bluetooth-b percent gitlab wpbeginner wpforms envira universal-access wheelchair-alt question-circle-o blind audio-description volume-control-phone braille assistive-listening-systems american-sign-language-interpreting deaf glide glide-g sign-language low-vision viadeo viadeo-square snapchat snapchat-ghost snapchat-square pied-piper first-order yoast themeisle google-plus-circle fa handshake-o envelope-open envelope-open-o linode address-book address-book-o address-card address-card-o user-circle user-circle-o user-o id-badge drivers-license drivers-license-o quora free-code-camp telegram thermometer thermometer-3 thermometer-2 thermometer-1 thermometer-0 shower bath podcast window-maximize window-minimize window-restore times-rectangle times-rectangle-o bandcamp grav etsy imdb ravelry eercast microchip snowflake-o superpowers wpexplorer meetup
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Category: Education

কম্পাসের ইতিবৃত্ত

July 22, 2020 · 2661 views

বিজ্ঞানী আলেসান্দ্রো ভোল্টা এবং তার তড়িৎ বিশ্লেষণ

July 13, 2020 · 1715 views

ইলেক্ট্রিকাল ইঞ্জিনিয়ারিংয়ে ভর্তি হয়ে যাও স্কুলে থাকতেই!

July 9, 2020 · 745 views

দৈনন্দিন জীবনের কিছু ভ্রান্ত ধারণা এবং প্রকৃত সত্য

July 6, 2020 · 1166 views

আপনার সন্তানকে সহজে অংক শেখানোর ৯টি কার্যকরী উপায়

July 2, 2020 · 1284 views

মজায় মজায় রসায়ন শিক্ষা!

July 2, 2020 · 1076 views

বিজ্ঞানবাক্সের সেরা কিছু এক্সপেরিমেন্ট- ৪র্থ পর্ব

July 2, 2020 · 844 views

বিজ্ঞানবাক্সের নির্বাচিত কিছু এক্সপেরিমেন্ট ৩য় পর্ব

July 2, 2020 · 633 views

বিজ্ঞানবাক্সের নির্বাচিত কিছু এক্সপেরিমেন্ট (১ম পর্ব)

June 27, 2020 · 791 views

যুগে যুগে মহামারীঃ পর্ব-১ কুষ্ঠ

April 12, 2020 · 1021 views

‘জিরো ওয়েস্ট’ লাইফ স্টাইল- নিজের জন্য ও পৃথিবীর জন্য দারুণ উপহার!

April 9, 2020 · 1485 views

অপছন্দের শিক্ষক ও সন্তানের জটিলতা; আপনার করণীয় কী?

December 17, 2019 · 2305 views

নোবেল ২০১৯; পৃথিবী বদলে দেয়ার স্বীকৃতি পেলেন যারা

November 3, 2019 · 1140 views

নোবেল ২০১৯; পৃথিবী বদলে দেয়ার স্বীকৃতি পেলেন যারা

October 31, 2019 · 1518 views

দৈনন্দিন কাজের মাধ্যমেই শিশু শিখুক অল্প অল্প গণিত!

October 20, 2019 · 1973 views