List of Signatories

To hear directly from some of the signatories, click here. Quotes will be added as they come in. If any of the signatories would like to leave a quote about why you signed this statement, drop us a note at friendlypeople.sg@gmail.com.

Total 683 individual & group signatories - Last updated 09 Feb 2021, 5:01pm

Individuals - Including education & social service professionals

  1. A, teacher

  2. A, Teacher (separate entry from above)

  3. A, former programme director

  4. A, psychologist

  5. A, former teacher

  6. A.C.K, Therapist

  7. A Mohamad, Medical Social Worker

  8. A Sherry, filmmaker

  9. A, Sign Language interpreter

  10. A Yagnya, Former Speech and Drama Educator

  11. Abdul Rahman Khan, former tutor

  12. AC, former teacher

  13. AC, Social Services Associate

  14. Ad M, former university tutor

  15. Ade, tutor

  16. Adi Saleem Bharat, Professor

  17. Adrian Lim, teacher

  18. Afiqah, Teacher

  19. Ai Ling, social worker

  20. Aish, social worker

  21. Mr A J Kee

  22. AK, school counsellor

  23. AK, Social Worker

  24. A.K, Teacher

  25. Alex Serrenti, counsellor and educator

  26. Alex Siah, former educator

  27. Alexander Teh, Youth Worker

  28. Alexis, Associate Psychologist

  29. Alphonsus Lee, Senior Social Worker

  30. Alvin How, Teacher

  31. Alvin Tan, Youth Educator

  32. Ms Amelia, Teacher

  33. Amelia L., Social Worker

  34. Ames, Early Childhood Educator

  35. Amanda Ang, Teacher

  36. Andres Luco, Associate Professor

  37. Andy Huang

  38. Andy, Case Manager

  39. Ang, teacher

  40. Ang Chong Leong, community worker

  41. Ang Kian Chuan, counsellor

  42. Anne Goh, Department Head

  43. Anne-Marie Ong, Community Worker

  44. Ms Annie, former teacher

  45. Anonymous, Counsellor

  46. Anonymous, Former Tutor

  47. Anonymous, Lecturer

  48. Anonymous, Special Needs teacher

  49. Anonymous, Teacher

  50. Anonymous, Teacher and counsellor

  51. Anonymous, Tutor

  52. Anonymous, University Lecturer

  53. AO, Educator

  54. A.S., Former teacher

  55. Ash, programme coordinator

  56. Asher, Youth Mental Health Social Worker

  57. Ashley

  58. AU, Social Worker

  59. Audrey, Counsellor

  60. Audrey, educator

  61. AW, former teacher

  62. AW, Teaching Assistant

  63. A.Y, Teacher

  64. B Wong, community worker

  65. B, former teacher

  66. B, Teacher

  67. B, Teacher (separate entry from above)

  68. B.Lim, Special Ed Educator

  69. B.TW, Youth Worker

  70. B.W., Lecturer

  71. Badriah Begum, former teacher

  72. Bay, Teacher

  73. Bein Siong, former social worker

  74. Benjamin Wong, Social Worker

  75. Bernard Sew, Teacher

  76. Beverly, educator

  77. BG, JC lecturer

  78. Bibiana Tan, Psychologist

  79. BL, Teacher

  80. BL Tan, Counsellor

  81. Bonni, school counsellor

  82. Brandon Chai, Teacher

  83. Brinda K S Naidu, former Senior School Counsellor

  84. Bryan, Trainer

  85. Bryan Choong, Counsellor

  86. BT Ang, Ex-Social Worker/Counsellor

  87. BZ, teacher

  88. C, JC teacher

  89. C, teacher

  90. C, teacher (separate entry from above)

  91. C, Teacher (separate entry from above)

  92. c, case worker

  93. C, Coach, Youth Special Olympics

  94. CN, Social Worker

  95. C.Ng, Educator

  96. C. Lim, Teacher

  97. C Lim, teacher (separate entry from above)

  98. C. Liu, Teacher

  99. C. Tan, Teaching Assistant

  100. CAJ, CCA facilitator and former teacher

  101. Carolyn Oei, Lecturer

  102. Cass, Early Childhood Educator

  103. CC, Social Worker

  104. CF, educator

  105. CG Lim, teacher

  106. Charissa, Social Worker

  107. Charlene, teacher

  108. Mrs Charles, former principal

  109. Charmaine Ong, former youth worker

  110. Chen Yu Long, Teacher

  111. Ms Cheng, teacher

  112. Dr Cherie Chan, Clinical Psychologist

  113. Chermain, Clinical Psychologist

  114. Cheryl Leong Yi Mei

  115. Chian Yuan Han, Preschool Educator

  116. Chin Chuan Fei, educator and trainee counsellor

  117. Ching S. Graduate Tutor

  118. Chng SW, part-time teacher

  119. Christine Chong, Teacher

  120. Chng Chen Keong, teacher

  121. Chua Wie Ling, early childhood educator

  122. Clara, teaching assistant

  123. Clare, Teacher

  124. Clarence Lee, head of learning and development

  125. CLY, Teacher

  126. Craig T., Social Work Student

  127. C T, Counsellor

  128. D, former teacher

  129. D, Teacher

  130. D, teacher (separate entry from above)

  131. Mrs Daisie Yip, former principal

  132. Damien Thow, Teaching Assistant

  133. Daniel, Clinical Psychologist

  134. Daniel, Social Worker

  135. Daniel Wong, Lecturer

  136. Danielle, social worker

  137. Daphne, teacher

  138. Daphne, Therapist

  139. David, social worker

  140. Davis

  141. Daven, Therapist

  142. Dawn, Early Intervention Teacher

  143. Dayat, community

  144. Deborah, Former Teacher

  145. Deenie Choong, Change Manager

  146. Dening Lo, tutor

  147. Dennis, teacher

  148. Dharesheni Nedumaran, Now D&I Manager, previously counsellor

  149. Mrs Diana Thompson, former teacher

  150. Disha Gurnani

  151. Dnz woo, medical social worker

  152. Dr Donald Favareau, Associate Professor

  153. Dora, Teacher

  154. Dora P, Teacher

  155. Drew, Tuition Teacher

  156. DT, former teacher

  157. DY, Social Worker

  158. E Lim, Teacher

  159. E Tan, Counsellor

  160. E, Social Worker

  161. E, teacher

  162. E, Teacher (separate entry from above)

  163. EL, Teacher

  164. E. Lee, Teacher

  165. E.G., social worker

  166. EN, Community Worker

  167. Edna, teacher

  168. Edward, social worker

  169. Edwina Shaddick, teacher

  170. EK, teacher

  171. EL, Art Therapy Trainee

  172. EL, Counsellor

  173. Elaine Ng, Lecturer/ Educator-Researcher (Early Childhood)

  174. Elise, educator

  175. Elly, Educator

  176. Emily, Medical Social Worker

  177. Emily, Teacher

  178. Ennabelle Huang

  179. Esther, Social Worker

  180. Ethan, teacher

  181. Eu, civil servant.

  182. Eugene, Social Worker

  183. Eunice S, teacher

  184. Evelyn Ho Sue Shen, teacher

  185. F. Idris, arts educator

  186. F Tan, ex-teacher

  187. F, Educator

  188. F, Teacher

  189. F, teacher (separate entry from above)

  190. Miss F, Teacher

  191. Faith Teo, Special Education Teacher

  192. Faux Z, tutor

  193. FL, teacher

  194. Foo, community worker

  195. Fledgling Spirit, teacher

  196. FW Lai, teacher

  197. FZ, English teacher

  198. G Lo, teacher

  199. G, teacher

  200. Gautam, Teaching Assistant

  201. G Chua, teacher

  202. GC, former social worker

  203. GC, Social Worker

  204. Gerard Ee, Community Worker

  205. GH, teacher

  206. GHS, teacher

  207. Glenn, teacher

  208. Grace, social services

  209. Grace C , social worker

  210. GT, Lecturer

  211. H, Social Worker

  212. H, Teacher

  213. Halil, Teacher

  214. Mrs H, Teacher

  215. Harry, Science Tutor

  216. Haylee G, Social Worker

  217. Hayley Su, psychologist

  218. Hazirah M., former teacher

  219. Hema, former teacher

  220. HK Goh, teacher

  221. HL, Psychologist

  222. Ho W.X., early childhood educator

  223. Mrs Ho Yee Wah, teacher

  224. Hongwen Chin, Teacher

  225. Hui Naixiang, case manager/ community social worker

  226. Huiling, Psychologist

  227. HY Yap, former case manager / community worker

  228. I, Ex-ITE Lecturer

  229. I Chan, former teacher

  230. I Tan, Psychologist

  231. I. Isa, Support Teacher

  232. Ian C, educator

  233. Ian, teacher

  234. Ingrid Hoofd, assistant professor

  235. Iona Shi, Ex-teacher

  236. Iris Ho, Counsellor

  237. Iskandar, Social Worker

  238. Ismadi, Teacher

  239. Izarus C, Teacher

  240. Izzaty Ishak, Community Worker

  241. J, Art Therapist

  242. J, Preschool Teacher

  243. J, Social Worker

  244. J, MOE officer

  245. J, Art Teacher

  246. J, Youth Sports Coach

  247. J Chia, Subject Head

  248. J. Zhang, Teacher

  249. Jacq Ong, former MOE PE teacher

  250. Jacqueline L, former social worker

  251. Jacqueline, Junior College teacher

  252. James Tan, retired teacher

  253. Jamie, Educator

  254. Jane, Teacher

  255. Janilyn, teacher

  256. Jason, science teacher

  257. Jayde Low, Teacher

  258. JC, Special Needs Educator

  259. JC, Teacher

  260. Jeanette H, Lecturer

  261. Jeanne, Private Tutor

  262. Jeeva T, former MOE teacher & current freelance teacher

  263. Jen, counsellor

  264. Jennifer Tan, Teacher

  265. Jenny Goh

  266. Jerrine Tan, former teacher in SG

  267. JH, community worker

  268. JH, Social Worker

  269. Jia Hui, Chemistry Teacher

  270. JIA MIN, TEACHER

  271. Dr Jiaying Sim, Asst Professor

  272. JK, Educator

  273. JM, Social worker

  274. JM Foo, Teacher

  275. Joanne, MOE Teacher

  276. Jocelyn Lee, Social Worker

  277. Joel Chow, Instructor

  278. Joel Gwynne, Associate Professor

  279. Joel Ng (Kelsey Kate), Teacher

  280. Joey, Teacher

  281. John

  282. Johnson T, Educator

  283. Joleen, teaching assistant

  284. Jolovan Wham, Social Worker

  285. Jordon Yang

  286. Joses

  287. Joseph, teaching at NUS

  288. Joy Moreira, teacher

  289. Joy L, social worker

  290. Joyce, counsellor

  291. Joyce Lim, Volunteer Counsellor

  292. Joyce Tan, educator

  293. Joyce Tan, current teacher

  294. JRI, Teacher

  295. JS, Teacher

  296. JS, Teacher (separate entry from above)

  297. JT, Counsellor

  298. Jul, inclusion facilitator

  299. Dr July Lies, Clinical Psychologist

  300. JW, ex-teacher

  301. JY, community worker

  302. JY, Teaching Assistant

  303. JY, social service staff

  304. JY, former teacher

  305. K, teacher

  306. K, community worker

  307. K.A, Teacher

  308. Kanoe, Teacher

  309. Mr K Singh

  310. Karan, Community Worker

  311. Karen Y., Psychologist

  312. Karen, former teacher

  313. Kartik Menon, Vice Principal

  314. Kate Tan, Teacher

  315. Katrina Ang, private tutor

  316. Kavitha, former teacher

  317. Kavitha, former school teacher

  318. KC, School Counsellor

  319. KCE, student

  320. Kenneth, social worker

  321. Kenneth K, teacher

  322. Kenneth N. Soh, social worker/counsellor

  323. Kevin, Teacher

  324. Kiran, admin

  325. Kittensarepink, social worker

  326. KJ, Teacher

  327. KL, Lecturer

  328. KM Ang, Teacher

  329. KM Loh, Teacher

  330. Koh Jee Leong, teacher

  331. Koh Xin Yu, Psychologist

  332. Krs, teacher

  333. KS, Student Teacher

  334. Kwok Kian Chow, former teacher

  335. L YX, Registered Social Worker

  336. L, former NUS tutor

  337. L, psychologist

  338. L, Teacher

  339. L, teacher (separate entry from above)

  340. Ms L, teacher

  341. L Lim, teacher

  342. L. Lee, teacher

  343. LC, teacher

  344. Lai Ah Eng, lecturer

  345. Lau, Psychologist

  346. Lavania R, Social Worker

  347. Lavina, youth worker

  348. Lawrence Goh, Counsellor

  349. LC, teacher

  350. LCN, teacher

  351. Lee Chih-Lian, teacher

  352. Lee, Special Needs Educator

  353. Lee, Teacher

  354. Lee, Teacher (separate entry from above)

  355. Lee, Teacher (separate entry from above)

  356. Lee, early childhood educator

  357. Lee, early intervention therapist

  358. Lee Lup Yuen, Former Adjunct Lecturer

  359. Lee Xiu Ping, Teacher

  360. Leo

  361. Dr. Leong YEW, university lecturer

  362. Leonard Tan, Teacher

  363. Leow Yangfa, registered social worker (RSW-1322)

  364. Leslie

  365. Li Qi Peh, teacher

  366. Li, Teacher

  367. Li Xie, community worker

  368. Lim, social worker

  369. Lim Bah Eng, retired teacher

  370. Lim Jingzhou, Community Worker

  371. Lim Zi Kai, teacher

  372. Lin, healthcare student

  373. Lin, MOE educator

  374. Ling, Social Worker

  375. Lingshen Chen, former social worker and school counsellor

  376. Lisa Tucker-Kellogg, Assistant Professor

  377. Liz T, therapist

  378. LL, teacher

  379. Lo Mun Hou, Associate Professor

  380. Loh, social worker

  381. Lolla, educator

  382. LOng, Social Service Associate

  383. L.S, teacher

  384. LSC, former teacher

  385. LY, former teacher

  386. Lydia, tutor

  387. Lyn, Medical student

  388. Lynn, Psychologist

  389. Lynette Li, former teacher

  390. Lynn T., former teacher

  391. M, teacher

  392. M, Teacher (separate entry from above)

  393. M, lecturer

  394. M & M, former social work associate

  395. M Ho, social service professional

  396. M. Cheng, teacher

  397. M.G., Teacher

  398. Maathavan

  399. Mable Wei, Former Counsellor

  400. Magdalene, Social Work Programmes Associate

  401. Mariana, Youth Worker

  402. Marla Bendini, community worker

  403. Mary, teacher

  404. Mas Senin, teaching assistant

  405. MAS, teacher

  406. Matthew, Social Worker

  407. May Mon, Preschool Teacher

  408. MB, tutor

  409. Melissa Chan, teacher

  410. Melissa, former teacher

  411. MG, Counsellor

  412. MH, lecturer

  413. MHJ, Teacher

  414. Michelle Lim, former teacher

  415. Michelle Tan, Clinical Psychologist

  416. Michelle, Youth mental health researcher

  417. Miki, student care teacher/social Work student

  418. Miranda S., teacher

  419. Miss Chai Ang Lee, teacher

  420. Moses Tan, former lecturer

  421. MR, former CCA Coach

  422. MS, Associate Psychologist

  423. Muhammad Danial, Youth Worker

  424. Muhamad Haikel Mohamed, Social Worker & Educator

  425. Muhammad Ifran, School Nurse

  426. Mumtaj, Teacher

  427. MZ

  428. Mr N, Teacher

  429. N, social worker

  430. N. early childhood educator

  431. N, Teacher

  432. N, teacher (separate entry from above)

  433. N, former primary school teacher

  434. N, Psychologist

  435. N Wong, Lecturer

  436. Nana, Early Childhood Educator

  437. Nancy, former lecturer

  438. Nat, Teacher

  439. Dr Natasha, Clinical Psychologist

  440. Natasha Bhatia, teacher

  441. Nate, educator

  442. Neo, Social Worker

  443. Neo, Social Worker (separate entry from above)

  444. Neo Kwee Gim, retired teacher

  445. Ng, teacher

  446. Mr. Ng, Head

  447. Ng Chenyee, Teacher

  448. Ngiam Su-Lin, Community Cultural Worker and Counsellor

  449. NH, former MOE teacher

  450. NH, lecturer

  451. NH, Social Service Executive

  452. Nicole H, Drama Educator

  453. Nigel Edwards, learning support and trainee Counsellor

  454. Nisha, Counsellor

  455. NSMM, teacher

  456. NT, social work student

  457. Nt, teacher

  458. Nur, Social Work Asst.

  459. Nur (separate entry from above)

  460. Nurhayati Khan, teacher

  461. Nyan Lin Cho, coach

  462. Mrs Ong, teacher

  463. Ong Kwee Hiong Clare, Psychologist and Ex-educator

  464. Ong Chin Ee, Associate Professor

  465. Ou, Counsellor

  466. Otto Fong, Science & Maths Teacher

  467. P, former teacher

  468. PA, former MOE teacher

  469. Pamela, educational and developmental psychologist

  470. Pat Markey, teacher

  471. PC, Special Needs Educator

  472. Peggy Santosa, counsellor

  473. Peony Wong, Retired Teacher

  474. Perer Tan, Teacher

  475. Phoebe L, teacher

  476. Poh, university prof

  477. Poi Hong, teacher

  478. Polly Ng, ex-teacher

  479. Poon Yain Ping, school HOD

  480. PR, teacher

  481. Dr Pwee Keng Hock, former university lecturer

  482. PY, Counsellor

  483. Qis, Social Worker

  484. Q.W., Subject Head

  485. Quek, mentor

  486. R, Early Childhood Educator

  487. R Goh, Teacher

  488. Rachel Hoe, teacher

  489. Raksha, Community Worker and Research Assistant

  490. Rangeni, educator

  491. Ranjana, teacher & former social worker

  492. Rash K, teacher

  493. Rashid, Financial Consultant, Former Financial Coach

  494. Rathi, Clinical Psychologist

  495. Rayner Tan, Lecturer

  496. Ren, Teacher

  497. RK, teacher

  498. Robert, tutor

  499. Robin Zheng, Assistant Professor

  500. Roland Sim, doctor

  501. Prof. Richard Ho, teacher

  502. Dr Roberto de Roock, assistant professor

  503. Roland, Tutor

  504. Rosemary McGowan, applied theatre practitioner and counsellor

  505. Roy Yeng, Counsellor

  506. ruixun, current teacher

  507. Ryan Chua, Counsellor

  508. Ryan Ling, Coach

  509. Ryan, teacher

  510. S, social worker

  511. S, Special Needs Educator

  512. S, youth worker

  513. S, former teaching assistant

  514. S, lecturer

  515. S, Teacher

  516. S. Ho, Teacher

  517. S. O., Eldercare worker

  518. S Ong, Teacher

  519. S. Seah, Teacher & Counsellor

  520. S.G., Teacher

  521. S.M, Nurse

  522. SA, Medical Social Worker

  523. SA, former teacher

  524. Sabina, teacher

  525. Sam Lee, teacher

  526. Sam Ng, former school teacher

  527. Samantha Ng, Childcare teacher

  528. Samantha Wong, teacher

  529. Sandara Tang, Senior Lecturer

  530. Sandra K, teacher

  531. Sarah, Preschool Teacher

  532. Sarah G, Teacher

  533. Sarah Ng, social services officer

  534. Saza, Educator

  535. Sean, AED

  536. Sean, Teacher

  537. Seeto T.C., student

  538. Sean Au Yong, Social Work Student

  539. Dr. See, mental health services provider & trainer

  540. Sha, ex-teaching assistant

  541. Shahira Hamza, ex-teacher

  542. Shamini, Registered Counsellor (C0471)

  543. Shan L, educator/teacher

  544. Shan Menon, Social Worker

  545. Shane Kwok, teacher

  546. Shang, Pre-School Teacher

  547. Sharinee, Teacher at a Primary School

  548. Shawn, psychologist

  549. Shen Jiaqi, Former art teacher

  550. Sherry C, peer supporter

  551. Shila Naidu, counsellor

  552. Shi Min Xie

  553. Shirin N, former teacher

  554. Shirley, Social Worker

  555. Shirlyn N, Medical Social Worker

  556. SHL, social worker

  557. Shyra, centre manager

  558. Shuling Yong, educator

  559. Shuyi, former social worker

  560. Miss Siti, Teacher

  561. Miss Siti, Teacher (separate entry from above)

  562. Siveeta Kristie, Preschool Educator

  563. SKC, Counsellor

  564. SL Tan, Psychologist

  565. SJY, Secondary School Teacher

  566. SM, former tutor

  567. Sobikun Nahar, Community Worker

  568. Somesh Sailesh, social worker

  569. Dr Soon Siew Peng, Clinical Psychologist

  570. Ms SR, teacher

  571. SR former teacher

  572. SS, former school social worker

  573. ST, Tutor

  574. Stephanie, Researcher

  575. Stephanie Chan, Lawyer & former English tutor

  576. Stephanie Loh, Dance Instructor

  577. Stephnxh, Early Childhood Educator

  578. Su, counsellor

  579. Subahshini, teacher

  580. Suraendher Kumarr, social researcher at a charity

  581. Suzanne I. Gomes, Teacher

  582. SY, Social Worker

  583. SY Yee, teacher

  584. SY-Z, teacher

  585. Syuhaidah, Social Worker

  586. T.

  587. T, lecturer (separate entry from above)

  588. T.K, MOE HQ Deputy Director

  589. Miss Tan, Educator

  590. Miss Tan, Teacher

  591. Tan, High School Teacher

  592. Tan, Early childcare educator

  593. tan hui shan, teacher

  594. Tan LB, educator

  595. Tan Y, teacher

  596. Tan Yun Xian, former medical social worker

  597. Tang, social worker

  598. Tanh, Teaching Assistant

  599. Tania, Educator

  600. Tank, counsellor, former educator

  601. Tan Si Ying, researcher

  602. Tarin Ong, Principal Counsellor/ Lecturer

  603. Tay YL, Teacher

  604. TEH, teacher

  605. Teng Qian Xi, private tutor

  606. Terence Tan, community artist

  607. TH Pool, teacher

  608. Mr Teo, teacher

  609. Mr TH Wong, teacher

  610. Tiew Ching Wen, Associate Psychologist

  611. Tiffany C, former outdoor educator

  612. Tim, current educator

  613. Ting Yan, teacher

  614. Tommy Wong, former professor

  615. TSY, social worker

  616. TY, Lecturer

  617. TY, Teacher

  618. V Loh from SGP, former teacher

  619. Valerie L., Counsellor

  620. Vanessa Ho, Community Worker

  621. V.C., Psychologist

  622. Victor H., counselling student

  623. Victoria O, former teacher

  624. V Vijayalakshmi, Social Worker

  625. W, educator

  626. W, tutor assistant

  627. Mrs Wang, teacher

  628. Wan Xiang, Art Therapist

  629. Wan Szi, teacher

  630. Wei, Lecturer

  631. Wei Ling, former MOE teacher

  632. Wen, Social Worker

  633. Wernmei Yong Ade, Lecturer

  634. Wen Xuan, Social Worker

  635. Will Z, Educator

  636. WL, behavioural therapist

  637. Wong Ying Kin, Psychologist

  638. WQ, social worker

  639. WT Tan, Teacher

  640. WY, former teacher

  641. WY, teacher

  642. WZ, former educator

  643. X, registered instructor and former lecturer

  644. XL, Teacher

  645. Xu Yuqi, Social Worker

  646. XY, closeted teacher counsellor

  647. Yap Ching Wi, Social Worker

  648. Yapsh76, teacher

  649. Ms Yee, Former Teacher

  650. Yen Han Cheoh, psychologist

  651. Yeo , Registered nurse

  652. Yeo Min, social worker

  653. Yin Yee, social worker

  654. Yi Ting, former teacher

  655. Yj, teacher

  656. YJ, former teacher

  657. YsP, former educator

  658. Yvonne L., Teacher

  659. Ms Yogeswari, Teacher

  660. Yogi

  661. Y, teacher

  662. YY, former teacher

  663. YY, Social Worker

  664. Z, social worker

  665. Z, Lecturer

  666. Z, special needs teacher

  667. Zac Ang, Counselling Psychologist (in training)

  668. Zach, Social Worker

  669. Zehara K, former MOE teacher

  670. Zhi Ming Sim, Community Advocate and PhD. Student

  671. ZK, tutor

  672. ZL, associate psychologist

  673. Zuby, Educator

  674. ZY, Early Childhood Educator

Groups or Organisations - Education/ Social Sector/ Youth (9 signatories)

  1. The Bi+ Collective Singapore

  2. Creative Earth Art Therapy

  3. No Readgrets Book Club

  4. Oogachaga

  5. SKRRRT CENTRAL

  6. SGRainbow

  7. the student network

  8. The T Project

  9. TransBefrienders